作者:O. Tsuge、S. Kanemasa
DOI:10.1016/0040-4020(72)88081-5
日期:1972.1
Thiobenzoyl isocyanate adds to 2-thiazoline and its 2-methyl derivative to afford the corresponding (4 + 2) cycloadducts. Reaction of benzoyl isocyanate with 2-methylthiazoline gives 2,3-dihydro-5-phenyl-8-benzoylcarbamoylthiazolo[3,2-c]pyrimidin-7-one. Thiobenzoyl isocyanate reacts with 2-methyl-2-thiazoline and -2-oxazoline at 90° to form the corresponding 8-thiobenzoylcarbamoylthiazolo- and -oxazolo[3
异氰酸硫代苯甲酰基酯加到2-噻唑啉及其2-甲基衍生物中,得到相应的(4 + 2)环加合物。异氰酸苯甲酰基酯与2-甲基噻唑啉的反应得到2,3-二氢-5-苯基-8-苯甲酰基氨基甲酰基噻唑并[3,2-c]嘧啶-7-one。异氰酸苯甲酰基酯与2-甲基-2-噻唑啉和-2-恶唑啉在90°下反应形成相应的8-硫苯甲酰基氨基甲酰基噻唑并-和-恶唑并[3,2-c]嘧啶-7-酮,而苯甲酰基异氰酸酯与2 -甲基恶唑啉提供2∶1的加合物,其与乙酸产生相应的恶唑并[3,2-c]嘧啶。异氰酸苯甲酰酯与2-乙基-2-噻唑啉反应生成2,3-二氢-6-苯甲酰基-8-甲基噻唑并[3,2-c]嘧啶-5,7-二酮和2,3-二氢-5-苯基-8-甲基噻唑并[3,2-c]嘧啶-7-一;描述了它们的酸和碱水解。通过两种异氰酸酯对2-烷基-2-噻唑啉和-2-恶唑啉的互变异构烯胺的β-碳的攻击。