Structural Reorganization of Allyl Isothiocyanate into Pyrrole Ring under Superbase: A Straightforward Access to NH-2-(Alkylsulfanyl)-1H-pyrroles and N-Alkyl-2-(alkylsulfanyl)-1H-pyrroles
作者:Boris Trofimov、Nina Nedolya、Lambert Brandsma
DOI:10.1055/s-0032-1316819
日期:——
and final sequential N-protolysis/S-alkylation or N,S-dialkylation of the formed N,S-centered pyrrol-2-ylsulfide dianion. A novel and facile synthetic route to NH-2-(alkylsulfanyl)-1H-pyrroles and N-alkyl-2-(alkylsulfanyl)-1H-pyrroles is reported. This was achieved by deprotonation of allyl isothiocyanate with the superbasic pair lithium diisopropylamide and potassium tert-butoxide (1:1 molar mixture)
摘要 报道了一种新颖且容易的合成路线,以合成NH-2-(烷基硫烷基)-1H-吡咯和N-烷基-2-(烷基硫烷基)-1H-吡咯。这是通过用超碱性对二异丙基氨基化锂和叔丁醇钾(1:1摩尔混合物)对异硫氰酸烯丙酯进行质子化,然后进行分子内闭环,用第二当量的超碱对环阴离子进行质子化,最后依次进行N-形成的N,S-中心的吡咯-2-基硫醚二价阴离子被质子分解/ S-烷基化或N,S-二烷基化。 报道了一种新颖且容易的合成路线,以合成NH-2-(烷基硫烷基)-1H-吡咯和N-烷基-2-(烷基硫烷基)-1H-吡咯。这是通过用超碱性对二异丙基氨基化锂和叔丁醇钾(1:1摩尔混合物)对异硫氰酸烯丙酯进行质子化,然后进行分子内闭环,用第二当量的超碱对环阴离子进行质子化,最后依次进行N-形成的N,S-中心的吡咯-2-基硫醚二价阴离子被质子分解/ S-烷基化或N,S-二烷基化。