44 TRUCE, HOLLISTER, LINDY, AND PARR The Journal of Organic Chemistry pared from the appropriate 1, 4-dibromobutanes by treatment with sodium sulfide. 12 By internal alkylation, we have synthesized phenyl cyclopentyl sulfone from 5-chloropentyl phenyl sulfone and sodium amide in 1, 2-dimethoxyethane (DME)(eq 2). The chlorosulfone precursor was obtained by treating 1, 5-dichloropentane wit, h potassium benzenethiolate ...