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Di-tert-butyl acetylenedicarboxylate

CAS No.
66086-33-7
Chemical Name:
Di-tert-butyl acetylenedicarboxylate
Synonyms
di-tert-butyl but-2-ynedioate;Aminium;itert-butylbut-2-ynedioate;di-tert-butyl 2-butynedioate;Di-tert-butyl acetylenedicarboxylate;2-BUTYNEDIOIC ACID DI-TERT-BUTYL ESTER;Di-tert-butyl acetylenedicarboxylate 98%;DI-TERT-BUTYL ACETYLENEDICARBOXYLATE, 98 %;2,2-Dithiobis(1-amino-4,5-dimethoxybenzene);Di-tert-butyl acetylenedicarboxylate
CBNumber:
CB0205331
Molecular Formula:
C12H18O4
Molecular Weight:
226.27
MDL Number:
MFCD00008808
MOL File:
66086-33-7.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-09-12 18:47:38

Di-tert-butyl acetylenedicarboxylate Properties

Melting point 33-37 °C(lit.)
Boiling point 80-82 °C0.05 mm Hg(lit.)
Density 1.0238 (rough estimate)
refractive index 1.4560 (estimate)
Flash point >230 °F
storage temp. 2-8°C
form solid
Appearance Colorless to off-white Solid
BRN 1957547
InChI 1S/C12H18O4/c1-11(2,3)15-9(13)7-8-10(14)16-12(4,5)6/h1-6H3
InChIKey FBCRUXRGQFLOMC-UHFFFAOYSA-N
SMILES CC(C)(C)OC(=O)C#CC(=O)OC(C)(C)C
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Corrosion (GHS05)Exclamation Mark (GHS07)
GHS05,GHS07
Signal word  Danger
Hazard statements  H314-H335
Precautionary statements  P260-P271-P280-P301+P330+P331-P303+P361+P353-P305+P351+P338
target organs Respiratory system
PPE Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Hazard Codes  C
Risk Statements  34-36/37
Safety Statements  26-27-28-36/37/39-45
RIDADR  UN 3261 8/PG 3
WGK Germany  3
8
HazardClass  8
PackingGroup  III
Storage Class 8A - Combustible corrosive hazardous materials
Hazard Classifications Eye Dam. 1
Skin Corr. 1B
STOT SE 3

Di-tert-butyl acetylenedicarboxylate price More Price(11)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 270822 Di-tert-butyl acetylenedicarboxylate 98% 66086-33-7 1g $70.3 2026-04-30 Buy
Sigma-Aldrich 270822 Di-tert-butyl acetylenedicarboxylate 98% 66086-33-7 5g $262 2026-04-30 Buy
aablocks AA003POY 1,4-Bis(1,1-dimethylethyl) 2-butynedioate 95% 66086-33-7 250mg $57 2026-05-28 Buy
aablocks AA003POY 1,4-Bis(1,1-dimethylethyl) 2-butynedioate 95% 66086-33-7 1g $63 2026-05-28 Buy
aablocks AA003POY 1,4-Bis(1,1-dimethylethyl) 2-butynedioate 95% 66086-33-7 5g $213 2026-05-28 Buy
Product number Packaging Price Buy
270822 1g $70.3 Buy
270822 5g $262 Buy
AA003POY 250mg $57 Buy
AA003POY 1g $63 Buy
AA003POY 5g $213 Buy

Di-tert-butyl acetylenedicarboxylate Chemical Properties, Uses, Production

Uses

The cross-cyclotrimerization of di-tert-butyl acetylenedicarboxylate, silylacetylenes and acrylamides was studied with cationic rhodium(I)/(R)-tol-binap complex as catalyst. Glycosyl azides were subjected to 1,3-dipolar cycloaddition with di-tert-butyl acetylenedicarboxylate.

General Description

The cross-cyclotrimerization of di-tert-butyl acetylenedicarboxylate, silylacetylenes and acrylamides was studied with cationic rhodium(I)/(R)-tol-binap complex as catalyst. Glycosyl azides were subjected to 1,3-dipolar cycloaddition with di-tert-butyl acetylenedicarboxylate.

540-88-5
142-45-0
66086-33-7
Synthesis of Di-tert-butyl acetylenedicarboxylate from tert-Butyl acetate and Acetylenedicarboxylic acid

Di-tert-butyl acetylenedicarboxylate Preparation Products And Raw materials

Di-tert-butyl acetylenedicarboxylate Suppliers

Global Suppliers ( 35)
Supplier Tel Email Country ProdList Advantage
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Syntechem Co.,Ltd info@syntechem.com China 12973 57
Sinopharm Chemical Reagent Co,Ltd. 86-21-63210123 sj_scrc@sinopharm.com China 9791 79
Sigma-Aldrich 021-61415566 800-8193336 orderCN@merckgroup.com China 51389 80
Aikon International Limited 025-58859352 19370895928 sales01@aikonchem.com China 15078 58
Tianjin heowns Biochemical Technology Co., Ltd. 400-6387771-6039 18920764717 sales@heowns.com China 24650 60
Shanghai SPAR pharmaceutical technology co., LTD 021-000000 admin@jingshipharmatech.com China 9919 58
Henan Alfa Chemical Co., Ltd +8618339805032 sale03@alfachem.cn China 9872 58
Shanghai Yingxin Laboratory Equipment Co., Ltd. 021-59178156 17002132182 3146474380@qq.com China 9997 58
Shanghai Maclean Biochemical Technology Co., LTD 021-50706066 15221275939 shenlinxing@macklin.cn China 29676 58
2-BUTYNEDIOIC ACID DI-TERT-BUTYL ESTER di-tert-butyl 2-butynedioate DI-TERT-BUTYL ACETYLENEDICARBOXYLATE, 98 % 2-Butynedioic acid di-tert-butyl ester, Di-tert-butyl 2-butynedioate Aminium Acetylenedicarboxylic acid di-tert-butyl ester Acetylenedicarboxylic acid ditert-butyl ester Di-tert-butyl acetylenedicarboxylate 98% 2,2-Dithiobis(1-amino-4,5-dimethoxybenzene) 2-Butynedioic acid, 1,4-bis(1,1-dimethylethyl) ester itert-butylbut-2-ynedioate Di-tert-butyl acetylenedicarboxylate di-tert-butyl but-2-ynedioate Di-tert-butyl acetylenedicarboxylate 66086-33-7 CH33COCOC8801CCOOCCH33 Synthetic Reagents Inorganic Salts Organic Building Blocks Esters Ammonium Building Blocks C12 to C63 Carbonyl Compounds Building Blocks C12 to C63 Carbonyl Compounds Chemical Synthesis Esters Organic Building Blocks