noun
数据来源：WordNet
METHODS : Salicylaldehyde was treated with chloromethylation , nitration and triphenyl phosphine , via witting reaction , to prepare 3 Aldehyde 4 hydroxy 5 nitro vinylbenzene .
方法：水杨醛经氯甲基化，硝化，成磷盐后与甲醛起Witting反应得到3醛基4羟基5硝基苯乙烯。
vinylbenzene