Novel Synthesis of 1,3,4-Thiadiazine Derivatives and Their Cycloaddition Reactions
作者:Wagnat W. Wardakhan
DOI:10.1002/ardp.200600111
日期:2006.11
the α‐halocarbonyl compounds 2a, b to give the thiosemicarbazone derivatives 3a, b. The latter compounds underwent cyclization to the 1,3,4‐thiadiazine derivatives 4a, b which underwent [2 + 4] cycloaddition reactions to give the 4H‐thiopyran derivatives 7a, b. The chemistry of these thiopyrans was studied. Some of the fused derivatives among them compounds 20a, 20b, 21a, 21b allowed good mycelial growth
4-苯基-3-氨基硫脲1与α-卤代羰基化合物2a、b反应生成氨基硫脲衍生物3a、b。后一种化合物环化为 1,3,4-噻二嗪衍生物 4a、b,后者进行 [2+4] 环加成反应得到 4H-噻二嗪衍生物 7a、b。研究了这些噻喃的化学。其中的一些融合衍生物化合物 20a、20b、21a、21b 允许两种真菌进行良好的菌丝体生长和孢子形成。这表明这两种真菌可以利用含氮杂环作为氮源。