P-Phenylethyl chloroformate

Attempted 1,4-cycloaddition of dichlorocarbene with 1,3-diphenylisobenzofuran was unsuccessful93 (Houben-Weyl, Vol. E19b, p 1562). The formation of 8,8-dichloro-2-(2-phenylethyl)-2,3-dihydro-l,3-methano-l//-isoindole-l-carbonitrile (31) bv the reaction of chloroform with isoindole derivative 30 under phase-transfer catalysis conditions has probably been misinterpreted as 1,4-addition of dichlorocarbene.94 This reaction may involve the Michael addition of trichloromethyl anion to isoindole followed by the cyclization of the adduct. 

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