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- P tolyl phenyl acetate is synthesized with Benzeneacetic acid and p cresol under presence of 4 dimethylaminopyridine(DMAP) and dicyclohexylcarbodiimide(DCC) at room temperature. 苯乙酸和对甲酚在二环己基碳二酰亚胺(DCC)存在下,用4-二甲氨基吡啶(DMAP)作催化剂合成苯乙酸对甲苯酯,反应时间短,反应条件温和,后处理容易,产率
- P tolyl phenyl acetate is synthesized with Benzeneacetic acid and p cresol under presence of 4 dimethylaminopyridine(DMAP) and dicyclohexylcarbodiimide(DCC) at room temperature.The yield is 91 6%? 苯乙酸和对甲酚在二环己基碳二酰亚胺(DCC)存在下,用4-二甲氨基吡啶(DMAP)作催化剂合成苯乙酸对甲苯酯,反应时间短,反应条件温和,后处理容易,产率高
- A whiff of ether will put you out in a few seconds. 一剂乙醚几秒钟后就会使你失去知觉。
- ethyl tolyl ether 乙基·甲苯基醚
- methyl tolyl ether 甲基甲苯基醚
- allyl tolyl ether 烯丙基 甲苯基醚
- I mind my p's and q's whenever I see him. 每当我见到他我都谨慎行事。
- In English, b, p, m and w are bilabials. 英语中的b、p、m、w为双唇音。
- AB and CD intersect at (the point) P. AB线和CD线在P点相交。
- The time now is 10:00 p, m, sharp. 现在的时间是晚上10点整。
- Today's news goes into the ether and is soon forgotten. 今天的新闻广播听後不久即置於脑後了。
- It was once believed that light waves traveled through the ether. 人们曾经相信光波在以太中穿过。
- Ether was used formerly to put a patient to sleep before an operation. 从前人们在手术前用乙醚来使病人昏睡。
- The hospital smelled of formaldehyde and ether. 医院里充满甲醛和乙醚的味道。
- He went off at the first whiff of ether. 他一吸入醚就失去知觉。
- The "d" in "grandpa" has been lost by assimilation to "p". "grandpa"中的"d"因受"p"的同化而不发音。
- He lost consciousness at the first whiff of ether. 他一嗅到乙醚便失去了知觉。
- A whiff of ether win put you out ha a few seconds. 吸一口乙醚会使你在几秒钟内昏迷过去。
- A cotton wad that was impregnated with ether. 浸透了醚的棉花团
- Alcohol sophisticated with ether. 掺有乙醚的酒精