FORMATION OF 1-CHLORO-1-ALKYNES FROM 1, 1-DICHLORO-1-ALKENES UNDER PHASE-TRANSFER CONDITIONS WITHOUT SOLVENT

P Vinczer, S Sztruhar, L Novak…

文献索引：Vinczer, Peter; Sztruhar, Szilvia; Novak, Lajos; Szantay, Csaba Organic Preparations and Procedures International, 1992 , vol. 24, # 5 p. 540 - 543

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被引用次数: 5

摘要

This method is based on ow earlier developed procedure for the synthesis of terminal alkynes from 1, 2dibromoalkanes. 6 The best results are obtained when the products (2) are distillable. Powdered potassium hydroxide is the most effective base for the elimination. Sodium and calcium hydroxide (formed in siru from water (1. O equiv.) and CaO (1. O equiv.)) gave similar results but lower yields (about 40%; See Table 1). If the temperature ...