Nucleophilic additions to acetylenic

Nucleophilic addition to acetylenic sulfoxides provides a,/ -ethylenic sulfoxides. Treatment of 181 with monoalkyl-copper afforded nearly quantitatively /J-alkylated a, / -ethylenic sulfoxides 182 through cis-addition to the triple bond. The reaction with lithium dimethylcuprate also afforded a similar adduct however, the reaction with lithium di-n-butylcuprate was found to give a small amount of ethyl n-butyl sulfoxide 183 besides the... [Pg.620]

Synthesis of Heterocycles through Nucleophilic Additions to Acetylenic Esters... [Pg.279]

Nucleophilic additions to acetylenic esters, synthesis of heterocycles through, 19, 299... [Pg.334]

Synthesis, of tetracyclic and penlacyclic condensed thiophene systems. 32, 127 Synthesis and reactions of l-azirines. 13, 45 Synthesis of heleroeycles through nucleophilic additions to acetylenic esters, 19, 279... [Pg.335]

George, M. V, Khetan, S. K., Gupta, R. K., Synthesis of Heterocycles through Nucleophilic Addition to Acetylenic Esters, 19, 279. [Pg.291]

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