Benzoic acid 5-(1,1,5-trioxo-5,6-dihydro-1H-1λ
6-[1,2,6]thiadiazin-2-yl)-[1,3]oxathiolan-2-ylmethyl ester 在
potassium carbonate 作用下,
以
甲醇 为溶剂,
生成
trans-2-hydroxymethyl-5-(5',6'-dihydro-1',1',5'-trioxo-2'H-1',2',6'-thiadiazin-2'-yl)-1,3-oxa-thiolane 、 cis-2-hydroxymethyl-5-(5',6'-dihydro-1',1',5'-trioxo-2'H-1',2',6'-thiadiazin-2'-yl)-1,3-oxa-thiolane