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119908-76-8

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119908-76-8 Usage

General Description

1,2-Cyclopropanedicarbonyldichloride, 3,3-dimethyl-, cis-(9CI) is a chemical compound commonly known as cyclopropane-1,2-dicarboxylic acid. It is a clear, colorless liquid with a pungent odor. 1,2-Cyclopropanedicarbonyldichloride,3,3-dimethyl-,cis-(9CI) is primarily used in the production of polymers and resins, as well as in the pharmaceutical industry for the synthesis of various drugs. It is highly reactive and can act as a crosslinking agent in the formation of polymers, making it valuable in the manufacturing of adhesives, coatings, and other industrial products. Additionally, it has potential applications in the development of new pharmaceuticals, particularly in the synthesis of molecules with cyclopropane rings that could have interesting biological activities. However, due to its hazardous properties, including being highly toxic and a respiratory irritant, proper handling and safety precautions must be observed when working with this compound.

Check Digit Verification of cas no

The CAS Registry Mumber 119908-76-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,9,0 and 8 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 119908-76:
(8*1)+(7*1)+(6*9)+(5*9)+(4*0)+(3*8)+(2*7)+(1*6)=158
158 % 10 = 8
So 119908-76-8 is a valid CAS Registry Number.

119908-76-8SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name cis-3,3-dimethylcyclopropane-1,2-dicarbonyl dichloride

1.2 Other means of identification

Product number -
Other names 3,3-dimethylcyclopropane-1,2-dicarbonyl dichloride

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:119908-76-8 SDS

119908-76-8Relevant articles and documents

Cyclopropanediamines, 3. - Pure Diastereomers of 1,2-Cyclopropanedicarboxylic Acids and Derivatives

Saal, Wolfgang von der,Reinhardt, Robert,Seidenspinner, Hubert-Matthias,Stawitz, Josef,Quast, Helmut

, p. 703 - 712 (2007/10/02)

Efficient preparations of pure diastereomers of dimethyl 1,2-cyclopropanedicarboxylates 2, dicarboxylic acids 3, dicarbonyl dichlorides 4, and dihydrazides 5 are reported.Mixtures of diastereomers of dimethyl dicarboxylates 2a, b, d, e are obtained from α,β-unsaturated methyl carboxylates 7 and methyl α-chlorocarboxylates 8 as well as from 7c, d and the sulfur ylide 10 (2c, d).The diastereomers are separated by fractionating distillations (2a, b, c, e) or crystallization (2d) on a 100-g to 1-kg scale (d.e. >99percent).Only low yields of 2c are obtained in the reaction of methyl crotonate (7c) with methyl α-chloroacetate (8a), since 7c predominantly dimerizes to afford 12.The diesters 2 are converted into the pure diastereomeric diacids 3, dicarbonyl dichlorides 4, and dihydrazides 5. 3,3-Dimethyl-cis-1,2-cyclopropanedicarboxylic acid (cis-3f) is obtained by trans-->cis isomerization of trans-3f with the help of acetic anhydride and sodium acetate as catalyst.The configurations of 2-6 and 12 are confirmed by 1H NMR spectroscopy.Derivatives of cis-1,2-dimethyl-1,2-cyclopropanedicarboxylic acid tend to form bicyclic products.Thus, the reaction of cis-3e with phosphorus pentachloride yields mainly the cyclic anhydride 6e and only small amounts of the dicarbonyl dichloride cis-4e.Furthermore, the dihydrazide cis-5e slowly cyclizes in the solid state to give the N-aminoimide 13 and hydrazine, a reaction which is fast in solution.Pure 13 is obtained by thermolysis of cis-5e at 60-65 deg C under high vacuum.

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