Answers are grounded in this paper and cite their sources.
In this paper a study on the reactivity of various heterocuprates [RCuY]MgX 1 towards 1‐alkynes R′−C≡CH 2 in tetrahydrofuran is presented. In most cases a smooth cis addition was observed in this solvent generally leading, after protic work‐up, to terminal alkenes RR′CCH2 4a or sometimes to mixtures of alkenes 4a and non‐terminal E‐alkenes R′CHCHR 4b in excellent yields. Except for the reaction of [t‐BuCuBr]MgCl with Ph−C≡C−H no evidence was obtained of proton abstraction from the terminal alkynes 2 by the cuprates. The influence of CuBr and LiBr on the course of the addition reaction was studied in some cases.
No takes yet. Share an insight, caveat, or question.
Westmijze et al. (1976) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: