常见例句Keywords disulfonyl methane;aldehyde;acyl anion;alkylation;reduction;synthesis; 二砜基甲烷;醛;酰基负离子;烃化反应;还原反应;合成;methylene disulfonyl 亚甲基二磺酰disulfonyl hydrazide 二磺酰肼 返回 disulfonyl