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1,1-Bis(benzenesulfonyl)ethylene: A synthetic equivalent of ethylene 1,2-dipole

✍ Scribed by Ottorino De Lucchi; Lucia Pasquato; Giorgio Modena


Publisher
Elsevier Science
Year
1984
Tongue
French
Weight
223 KB
Volume
25
Category
Article
ISSN
0040-4039

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ChemInform Abstract: Simple and Efficien
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Simple and Efficient Synthesis of the Acetylene Equivalent (E)-1-Benzenesulfonyl-2-(trimethylsilyl)ethylene. -The title acetylene equivalent (III) is readily synthesized in a one-pot reaction via iodosulfonylationdehydroiodination of (vinyl) trimethylsilane (I). -(GRIGG, R.; NAJERA,

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A novel reaction of 1,1-dicyano-2-bis (trifluoromethyl) ethylenes (I) with aryl amines in the presence of carbonyl compounds leading to the trifluoromethyl substituted derivatives of 1,4-dihydropyridine is found and investigated. ## J X=CF,,CO,AIk The cyclization reactions (I) with classic enamin

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An approach of taxol synthesis based on the use of (E)-bis-l,2-(tributylstannyl)ethylene 6 as a readily available two-carbon 1,2-1ink between A and C-ring is described, The conjugate addition of a mixed higher-order stannylvinyl cyanocuprate derived from 6 on chkal cyclobexenone $ is completely ster