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  • Author: C.K. Gupta, x
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Reactions of several semi-stabilized phosphonium ylides with 2,7-dibromofluorenethione and thiobenzophenone, have been reported to give substituted 9-benzylidene-2,7-dibromo-fluorenes and 1-(substituted phenyl)-2,2-diphenyl ethylenes respectively in fair to good yields. The structural identities were based on spectral data.