Phenyl-cyclo-butene

Chlorobenzylidene chloride is hydrolysed by concentrated sulfuric acid in 5 hours at room temperature,531 and 4-chloro-3,3,4-trifluoro-l-phenyl-cyclo-butene gives 3-phenyl-3-cyclobutene-l,2-dione (75% yield) when treated with... 

BIS(SALICYCL1DENE)ETHYLENE-DIIM1NO COBALT(Il), 57, 78 BlS[2,2,2-TRIFLUORO-l-PHENYL-l-(TRIFLUOROMETHYL)ETIIOXY ] -DIPHENYL SULFURANE, 57, 22 l,2-BlS(TRIMETHYLSlLYLOXY)CYCLO BUTENE, 57, 1... 

Analogous bifunctionalizations of cyclohexene, 1-phenyl-2-butene and cyclo-pentene to l-halo-2-acetamido (acetoxy) adducts are reported by Weinberg and... 

An acceleration was observed in the hydrogen-transfer reaction from 1,2-cyclo-hexanedimethanol to ( )-4-phenyl-3-butene-2-one in toluene catalyzed by [RuCl((S)BINAP)(benzene)]Cl (2 mol% BINAP = 2,2 -bis(diphenylphosphino)-1,1 -binaphthyl) and SDS (6mol%) [79]. The surfactant is essentia] for the enhancement of catalytic activity and the authors proposed the existence of reverse micelles. 

MoC15 promotes the ring-opening transformations of cyclopropyl ketones. Cyclopropyl phenyl ketone 251 is converted to 1-phenyl-1,2,4-trichloro-1-butene 252. Desilylative lactonization of propyl 2-(trimethylsilylmethyl)cyclo-propanecarboxylate 253 yields ds-2-chloro-4-pentanolide 254 stereoselectively [144]. (Scheme 100)... 

---