3172-52-9
2,5-二氯噻吩
+
34297-79-5
dibenzothiophenium bismethoxycarbonylmethylide
→
~79%
66946-86-9
dimethyl 2-(2,5-dichlorothiophen-1-ylidene)propanedioate
6773-29-1
2-叠氮丙二酸二甲酯
~70%