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153633-36-4

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153633-36-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 153633-36-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,3,6,3 and 3 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 153633-36:
(8*1)+(7*5)+(6*3)+(5*6)+(4*3)+(3*3)+(2*3)+(1*6)=124
124 % 10 = 4
So 153633-36-4 is a valid CAS Registry Number.

153633-36-4Relevant articles and documents

Integration of oxidative arylation with sulfonyl migration: One-pot tandem synthesis of densely functionalized (NH)-pyrroles

Laha, Joydev K.,Sharma, Shubhra,Bhimpuria, Rohan A.,Dayal, Neetu,Dubey, Gurudutt,Bharatam, Prasad V.

, p. 8791 - 8803 (2017/08/29)

A one-pot synthesis of 2-aryl-3-alkyl/aryl-sulfonyl-(NH)-pyrroles from N-sulfonylpyrroles, developed for the first time, via palladium-catalyzed oxidative C-2 arylation followed by sulfonyl migration is described. The simple, easy access to the highly functionalized free-NH pyrroles secures opportunities for the preparation of compounds with promising biological activities in contemporary organic synthesis. The event of sulfonyl migration from pyrrole-N to C-3 is thermodynamically favored as revealed by density functional methods. The different plausible mechanisms for the migration of the sulfonyl group are also discussed.

An efficient and selective synthesis of 2,5-substituted pyrroles by gold-catalysed ring expansion of alkynyl aziridines

Davies, Paul W.,Martin, Nicolas

scheme or table, p. 159 - 164 (2011/02/16)

A range of substituted alkynyl aziridines undergo a ring expansion to afford 2,5-substituted pyrroles under gold catalysis. While effective conditions can be generated from other gold sources, a combination of Ph3PAuCl and AgOTs generate a cata

A facile and regioselective synthesis of 2,5-disubstituted pyrroles via gold-catalyzed cycloisomerization of acetylenylaziridines

Chen, Dong-Dong,Hou, Xue-Long,Dai, Li-Xin

supporting information; experimental part, p. 6944 - 6946 (2010/02/27)

Gold-catalyzed cycloisomerization reaction of acetylenylaziridines provides 2,5-disubstituted pyrroles in high yields. The presence of protic species accelerates the reaction rate and improves the yields of pyrrole products.

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