作者:R. Eastmond、T.R. Johnson、D.R.M. Walton
DOI:10.1016/0040-4020(72)80041-3
日期:1972.1
been prepared in solution by sequences involving Cu-catalysed oxidative couplings (Hay technique) of silyl-protected terminal alkynes, partial cleavage (desilylation) of the products by alkali, recoupling and complete desilylation. Thus using the conditions established in a model coupling, Et3SiCCH(I) → Et3Si(CSiEt3(II), coupling of the silyidiyne Et3Si(CC)2H(II) gives Et3Si(CC)4SiEt3(IV) which upon
H(CC)n系列(n = 4-10,12)中的各个聚炔已通过溶液制备,涉及的序列涉及铜催化的甲硅烷基保护的末端炔烃的氧化偶联(Hay技术),部分裂解(脱甲硅烷基化)通过碱,偶联和完全甲硅烷基化来纯化产品。因此,使用建立在模型耦合,等条件3 SiCCH(I)→的Et 3的Si(CSiEt 3(II),等。silyidiyne的耦合3的Si(CC)2 H(II)给出的Et 3 Si(CC)4 SiEt 3(IV),经裂解后可得到色谱分离的IV,Et 3 Si(CC)混合物4 H(V)和H(CC)4 H(VI)。V的耦合依次产生Et 3 Si(CC)18 SiEt 3(VII),经裂解产生Et 3 Si(CC)8 H(VIII)和H(CC)8 H(IX), coupling的偶合得到双甲硅烷基十六烷基乙炔Et 3 Si(CC)16 SiEt 3(X)。六乙炔和十二炔基可以类似地合成:Et