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ボラン

ボランは水素化ホウ素とも呼ばされ，ホウ素と水素という二つの要素によって形成された一連の化合物の総称である。簡単なボランは無色であり，不快な臭いを有し，毒性が非常に強い。一般的にその化学的性質が不安定であり，空気中で自然発火でき，酸化ホウ素を生成する。ホウ素原子の増加に伴って，ボランは気体状態（例えばジボラン）から順に液体状態（例えばペンタボラン）と固体状態（例えばデカボラン）に変化する。今まで開発されたボランは２０種以上あり，二つの種類に分けられ，その一般式はそれぞれ以下のとおりである：BnHR+4(n≥2)：例えばジボラン(B2H6)、ペンタボラン-9 (B5H9)、シックスティーンボラン(B16H20)；BnHR+6(n≥3)：例えばプロピルボラン(B3H9)、ペンタボラン-11(B5H11)、ノナンボラン(B9H15)等。ボランはいずれも不快な臭いを有する。低級ボラン（一般的にホウ素原子を含有しない）の化学的性質は活性であり，空気中で自然発火でき，加水分解、ハロゲン化、及びアミノ化を行わやすい。使用量が最も多くかつ最も重要なのはジボランである。工業分野でジボランはエーテルの作用下で三フッ化ホウ素と水素化リチウムによって調製される。その他のボランは異なる温度下でジボランを熱分解して調製される。燃焼時にボランは多くの熱量を発し，そのためロケット及びミサイルの高エネルギー燃料として用いられる。また金属やセラミック部品の処理剤，ゴムの架橋剤としても用いられる。ジボランの一つの重要な用途はヒドロホウ素化反応における有機物の還元剤として用いられる。ボランは毒性が非常に強く，ジボランを吸入すれば肺を損傷し，デカボランを吸入すれば心不全を引き起こし，高級ボランは中枢神経系の中毒を引き起こしかつ肝臓や腎臓を損傷することができる。従ってボランを使用する時に注意しなければならない。

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Chemical Name	CAS	MF
2-chloro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4-(trifluoromethyl)benzonitrile	2819707-92-9	C14H14BClF3NO2
2-chloro-4-methoxy-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile	2819708-19-3	C14H17BClNO3
2-bromo-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole	1402166-32-8	C9H13BBrNO2S
2-bromo-4-methoxy-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile	2819708-20-6	C14H17BBrNO3
2-bromo-4-methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile	2819708-14-8	C14H17BBrNO3
2-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidin-2-yl)propan-2-ol	1319255-87-2	C13H21BN2O3
3-(6-Trifluoromethylpyridin-2-yl)phenylboronic acid pinacol ester	2223043-70-5	C18H19BF3NO2
2,5-dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile	1630082-71-1	C15H20BNO2
2-(tetrahydro-2H-pyran-4-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine	1402166-38-4	C15H23BN2O3
2-(tetrahydro-2H-pyran-4-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline	2223031-31-8	C17H26BNO3
2-(tert-butyl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazine	2223049-63-4	C14H23BN2O2
2-(tert-butyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-4-amine	2223027-21-0	C15H25BN2O2
2-(sec-butyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole	2096336-56-8	C13H22BNO2S
2-(pyrrolidin-1-yl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazine	2077892-16-9	C14H22BN3O2
2-(pyridin-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine	2223041-61-8	C15H18BN3O2
2-(4-methylpiperidin-1-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole	1356938-07-2	C15H25BN2O2S
5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(p-tolyl)pyrimidine	1402172-42-2	C17H21BN2O2
2-(4-Methylpiperidin-1-yl)-5-(4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)pyridine	1416723-31-3	C17H27BN2O2
2-(5-ethylfuran-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	1024677-77-7	C12H19BO3
2-(4-cyclopropyl-2-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	1443377-33-0	C16H23BO3
2-(Cyclohexyloxy)pyrimidine-5-boronic acid pinacol ester	1402174-34-8	C16H25BN2O3
2-(Cyclopentoxy)pyrimidine-5-boronic acid pinacol ester	1356464-57-7	C15H23BN2O3
1-フェニル-3-(4,4,5,5-テトラメチル-1,3,2-ジオキサボロラン-2-イル)-1H-ピラゾール	1002334-13-5	C15H19BN2O2
2-(5-Bromo-2-fluoro-4-methylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	1111096-03-7	C13H17BBrFO2
1-シクロペンチル-1H-ピラゾール-4-ボロン酸ピナコールエステル	1233526-60-7	C14H23BN2O2
2-(cyclohexyloxy)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole	1353288-05-7	C15H24BNO3S
1H-Pyrazole, 1-cyclohexyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-	2223051-72-5	C15H25BN2O2
1H-Pyrrole, 4-methyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-	2758810-70-5	C11H18BNO2
1-Azetidinecarboxylic acid, 3-[3-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-, 1,1-dimethylethyl ester	2223012-09-5	C20H29BFNO4
2-Fluoro-4-methyl-5-cyclopropylphenylboronic acid pinacol ester	2223042-83-7	C16H22BFO2
2-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophen-3-yl)-1H-imidazole	2256755-63-0	C13H17BN2O2S
2-(cyclopentyloxy)-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole	2256758-17-3	C15H24BNO3S
2-(4-methyl-1H-pyrazol-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile	2256756-18-8	C17H20BN3O2
2-(4-methyl-1-piperazinyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)Pyrazine	1186041-98-4	C15H25BN4O2
2-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)morpholine	2223005-38-5	C15H23BN2O3
2-(cyclopentyloxy)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole	1419483-14-9	C14H22BNO3S
2-Chloro-4-bromo-5-methylphenylboronic acid pinacol ester	2223037-58-7	C13H17BBrClO2
2-(4-シクロプロピル-2-メチルフェニル)-4,4,5,5-テトラメチル-1,3,2-ジオキサボロラン	2223040-90-0	C16H23BO2
2-(5-bromo-2-cyclopropylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	1402227-96-6	C15H20BBrO2
3-Chloro-4-bromo-6-methylphenylboronic acid pinacol ester	2223046-57-7	C13H17BBrClO2
2-(4-methylpiperazin-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile	1105665-06-2	C18H26BN3O2
2-(4-Methylpiperidin-1-yl)-4-(4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)pyridine	1353877-52-7	C17H27BN2O2
2-(5-chloro-2-cyclopropylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	1486485-28-2	C15H20BClO2
2-(4-cyclopropyl-3-fluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2223054-58-6	C15H20BFO2
2-(4-methyl-1H-pyrazol-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine	1351231-80-5	C14H19BN4O2
2-(5-cyclohexylfuran-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2223040-83-1	C16H25BO3
2-(4-cyclopropyl-3-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2223052-70-6	C16H23BO3
4,4,5,5-tetramethyl-2-(4-(methyl-13C)phenyl)-1,3,2-dioxaborolane	1189171-65-0	C13H19BO2
2-(5-BROMOFURAN-2-YL)-4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLANE	1111096-25-3	C10H14BBrO3
2-(5-methoxy-2-(tetrahydro-2H-pyran-3-yl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2223004-46-2	C18H27BO4
1,3,2-Dioxaborolane, 2-[2-methoxy-5-(3-oxetanyl)phenyl]-4,4,5,5-tetramethyl-	2223045-68-7	C16H23BO4
1,3,2-Dioxaborolane, 2-[2-methoxy-4-(3-oxetanyl)phenyl]-4,4,5,5-tetramethyl-	2223049-34-9	C16H23BO4
Benzoic acid, 4-cyano-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-, methyl ester	863868-26-2	C15H18BNO4
Azetidine, 3-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-	2364586-76-3	C15H22BNO2
2-(3-chloro-4-cyclopropylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2118230-75-2	C15H20BClO2
2-(3-cyclopropyl-5-fluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	627526-62-9	C15H20BFO2
2-(3-methyl-1H-pyrazol-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine	1352574-99-2	C14H19BN4O2
2-(4-Bromo-1H-pyrazol-1-yl)pyrimidine-5-boronic acid pinacol ester	1402233-93-5	C13H16BBrN4O2
2-(2-chloro-5-cyclopropylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2223052-80-8	C15H20BClO2
2-(3-(tert-butyl)-4-(tetrahydro-2H-pyran-3-yl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2222996-37-2	C21H33BO3
2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazol-2-yl)pyridazin-3(2H)-one	2096333-22-9	C13H16BN3O3S
2-(4-methyl-1H-imidazol-1-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	1351231-76-9	C15H20BN3O2
tert-butyl 2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)morpholine-4-carboxylate	1131220-85-3	C21H32BNO5
2-(3-cyclopropyl-4-methylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2223031-05-6	C16H23BO2
2-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)ethyl acetate	1251731-71-1	C13H21BN2O4
2-(2-cyclopropyl-5-methylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2223053-11-8	C16H23BO2
2-(3-Methylpiperidino)pyrimidine-5-boronic acid pinacol ester	1402174-20-2	C16H26BN3O2
2-(2-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1H-imidazole	2256755-82-3	C16H21BN2O2
2-(4-methoxy-2-(tetrahydro-2H-pyran-4-yl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2223045-43-8	C18H27BO4
2-(3-fluoro-4-(tetrahydrofuran-3-yl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2256755-38-9	C16H22BFO3
2-(4-methyl-1H-imidazol-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile	1638505-75-5	C17H20BN3O2
Quinoxaline, 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-	2077892-18-1	C14H17BN2O2
2-(4-Chloro-2-methoxy-5-methylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	1641570-75-3	C14H20BClO3
2-(4-Bromo-2-methoxy-5-methylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	1641571-56-3	C14H20BBrO3
4-クロロチオフェン-2-ボロン酸ピナコールエステル	1040281-84-2	C10H14BClO2S
2-(4-methyl-1H-imidazol-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazine	1402240-40-7	C14H19BN4O2
2-(2-cyclopropyl-6-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2223030-13-3	C16H23BO3
2-(3,4-difluorophenyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole	1402233-10-6	C15H16BF2NO2S
2-(3-bromo-4-cyclopropylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	1402227-98-8	C15H20BBrO2
2-(3-methoxyphenyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine	1402227-27-3	C17H21BN2O3
2-(4-(1,4-dioxan-2-yl)thiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2222997-27-3	C14H21BO4S
2-(4-fluoro-2-(tetrahydro-2H-pyran-4-yl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2223041-09-4	C17H24BFO3
3-(Trifluoromethyl)-4-(N-methylpiperazin-1-yl)phenylboronic acid pinacol ester	1373522-68-9	C18H26BF3N2O2
5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(o-tolyl)pyrimidine	1402172-43-3	C17H21BN2O2
2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazol-1-yl)pyrimidine	2256757-93-2	C12H16BN5O2
2-(2-methylimidazol-1-yl)-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)pyridine	1257554-07-6	C15H20BN3O2
2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)pyridazin-3(2H)-one	2223049-60-1	C16H19BN2O3
2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5-(o-tolyl)pyrazine	1402172-36-4	C17H21BN2O2
2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3-(trifluoromethyl)phenyl)-1H-imidazole	2256755-73-2	C16H18BF3N2O2
2-(3-methoxy-4-(tetrahydro-2H-pyran-4-yl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2223053-45-8	C18H27BO4
2-(4-bromo-3-cyclopropylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	1402227-99-9	C15H20BBrO2
2-(2-cyclopropyl-5-(trifluoromethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	1402226-93-0	C16H20BF3O2
2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)thiazole	2223054-34-8	C14H17BN2O2S
2-(4-bromo-2-cyclopropylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	1402227-95-5	C15H20BBrO2
2-Methyl-4-(N-methylpiperazin-1-yl)phenylboronic acid pinacol ester	2223033-27-8	C18H29BN2O2
2-(4-Bromofuran-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	1025719-11-2	C10H14BBrO3
2-(3-methylpiperidin-1-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole	1315352-38-5	C15H25BN2O2S
2-(4-fluoro-2-methylphenyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole	1402227-75-1	C16H19BFNO2S
2-(4-Methylimidazol-1-yl)pyridine-5-boronic acid pinacol ester	2223028-89-3	C15H20BN3O2
5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(m-tolyl)pyrimidine	1402172-44-4	C17H21BN2O2