Reaction of 4‐phenylthiosemicarbazide with dialkyl acetylenedicarboxylate in CH2Cl2 at 0°C lead to construction of alkyl 3‐amino‐2‐phenyliminothiazolidine‐4‐one‐5‐ylidene acetate in a few minutes and good yields. Alternatively, the use of thiosemicarbazide has given the corresponding 3‐amino‐2‐iminothiazolidine‐4‐one‐5‐ylidene acetate, while application of di‐t‐butylacetylenedicarboxylate in these
4-苯基
硫代
氨基
脲与乙酰二
羧酸二烷基酯在0°C下于CH 2 Cl 2中的反应在几分钟内即可形成3-
氨基-2-苯基亚
氨基
噻唑烷-4-1-5-5-亚烷基
乙酸烷基酯,且收率很高。可替代地,使用的
氨基
硫脲给相应的3-
氨基-2- iminothiazolidine -4-酮-5-亚基
乙酸盐,而二-应用吨在这些反应-butylacetylenedicarboxylate未与环化承担的责任。J.杂环化学。(2010)。