Diphenylmethane would have a two proton peak.
二苯甲烷必定有一个二质子的峰。
Status quo of the technology, production, and market at home and abroad of 4,4'-diphenylmethane-diisocyanate (MDI) was summarized.
综述了国内外4，4’二苯甲烷二异氰酸酯（MDI）的工艺技术、生产及市场供需现状。
CONCLUSION: compound 1 was a new diphenylmethane derivative, and compounds 2-6 were isolated from the genus Uvaria for the first time.
结论：化合物1是一个新的二苯甲烷类衍生物，化合物2 - 6皆为紫玉盘属植物中首次分到。
The results show that the application of iron acetate catalyst can not only promote diphenylmethane conversion, but also accelerate the reaction rate.
研究表明用醋酸铁作催化剂不仅可以使二苯甲烷的转化率增加，而且可使反应速度加快。
This system also can catalyze the reaction of benzene with alkyl chloride, in which only the desired diphenylmethane is isolated in good yield (5 equiv. ).
催化烷基氯和苯的反应，其中二氯甲烷和苯反应得到5倍量的单一产物二苯甲烷。
As an artificial enzyme, it can be optimized by changing the diphenylmethane units or bridging chains or by chemical modification of hydrophobic cavities to form new host compounds.
作为人工模拟酶，通过改变氮杂环蕃化合物的形状以及引入活性基团，形成不同包结性能的主体化合物。
As an artificial enzyme, it can be optimized by changing the diphenylmethane units or bridging chains or by chemical modification of hydrophobic cavities to form new host compounds.
作为人工模拟酶，通过改变氮杂环蕃化合物的形状以及引入活性基团，形成不同包结性能的主体化合物。
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