1,3-thiazine derivatives (1, R1= h) is achieved using substituted acrylic acids under peptide coupling conditions; use of sterically hindered acrylic acids results in an anomalous reaction and the thiazine derivative (1, R1= R2= Et) gives an interesting rearrangement.
在肽偶联条件下,使用取代的
丙烯酸可一步一步完成
1,3-噻嗪衍
生物(1,R 1 = h)的成环反应。使用位阻
丙烯酸会导致反常反应,
噻嗪衍
生物(1,R 1 = R 2 = Et)产生有趣的重排。