Acylierung von heterocyclen mit kohlensäurederivaten—III11II. Mitteilung: H. Graubaum, H.H. Glatt, D. Martin, R. Bacaloglu, D. Szeibert, C. Csunderlik und M. Brekner, J. Prakt. Chem. 324, 809 (1982).
作者:D. Martin、F. Tittelbach
DOI:10.1016/s0040-4020(01)91959-3
日期:——
The addition products of benzimidazolinethione and isocyanates are easily cyclized to benzimidazolo [1,2-d](1,2,4)thiadiazoline systems 4 by treatment with Br2/NEt3. The thio-analogues 9 were synthesized from 2-aminophenyl thioureas and thiophosgene followed by bromine oxidation and are in equilibrium with the iminodithiazoline form 10. The thiadiazolinones 4 and the thiadiazoline thiones show exchange
通过用Br 2 / NEt 3处理,苯并咪唑啉硫酮和异氰酸酯的加成产物容易环化为苯并咪唑并[1,2-d](1,2,4)噻二唑啉系统4。硫代类似物9是由2-氨基苯基硫脲和硫光气然后溴氧化而合成的,并且与亚氨基二噻唑啉形式10处于平衡状态。噻二唑啉酮4和噻二唑啉硫酮显示RNCO(S)部分在用异氰酸酯,异硫氰酸酯和二硫化碳处理时的交换反应。