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4,4,6,6-tetramethyl-5-(p-tolylsulfonyl)-1-(trimethylsilyl)-2,3-diazabicyclo<3.1.0>hex-2-ene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

137305-75-0

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137305-75-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137305-75-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,3,0 and 5 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 137305-75:
(8*1)+(7*3)+(6*7)+(5*3)+(4*0)+(3*5)+(2*7)+(1*5)=120
120 % 10 = 0
So 137305-75-0 is a valid CAS Registry Number.

137305-75-0Relevant academic research and scientific papers

PREPARATION AND REACTIVITY OF ARYLSULFONYL SUBSTITUTED CYCLOPROPENES

Padwa, Albert,Wannamaker, M. Woods

, p. 6139 - 6156 (2007/10/02)

A study of the cycloaddition behaviuor of several arylsulfonyl substituted alkynes with 2-diazopropane has been carried out.These activated acetylenes react to give 3H-pyrazoles which extrude nitrogen on photolysis to produce cyclopropenes in high yield.Soft nucleophiles such as thiophenoxide readily add to the activated pi-bond to give thiophenyl substituted cyclopropanes.Reaction of 1-phenylsulfonyl-2,3,3-trimethylcyclopropene with n-butyllithium followed by alkylation with various electrophiles produces arylsulfonyl substituted methylene cyclopropanes.These compounds undergo thermal rearrangement to the thermodynamically more stable isopropylidene cyclopropane.

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