Using acid or pyridine as a catalyst,nitrogen aci3,4-diamino-3-cyclobutenedione)can be acylated by carboxylic acid,acetic anhydride and acyl chloride.

 
  • 在酸或吡啶催化下,氮方酸(3,4-二氨基-3-環(huán)丁烯二酮)可被?;噭人?、醋酐和酰氯?;?;
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan