问题：求紫外吸收剂BP-6(2,2’-二羟基-4，4’-二甲氧基二苯甲酮)的合成工艺
类型：求助 (悬赏分:3分)
提问：xiaochuan
等级：▲
版块：有机化学问题(jimuwei,fpcwin1211,netpanda,yjgzfl,Ftian,)
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时间：2006-01-14 11:02:13 编辑加入/取消收藏订制/取消短消息举报该贴

求以间苯二酚或间羟基苯甲醚为原料,合成2,2’-二羟基-4，4’-二甲氧基二苯甲酮(BP-6)的工艺.

回复人：tangyyer,★★★★★ (有空来逛逛my blog: http://tangyyer.blog.hexun.com) 时间：2006-01-14 18:55:56 编辑

1楼

可以用间甲氧基苯甲醚和光气反应合成2,2’-二羟基-4，4’-二甲氧基二苯甲酮(BP-6)，见DE 4134773，以下是Abstract：
Process for preparation of benzophenones. Schmeidl, Karl; Schaffner, Ernst. (BASF A.-G., Germany). Ger. (1992), 5 pp. CODEN: GWXXAW DE 4134773 C1 19921112 Patent written in German. Application: DE 91-4134773 19911022. Priority: . CAN 118:212674 AN 1993:212674 CAPLUS

Patent Family Information

Patent No. Kind Date Application No. Date
DE 4134773 C1 19921112 DE 1991-4134773 19911022

Priority Application
DE 1991-4134773 19911022

Abstract

Benzophenones I [R1 = H, C1-4 alkyl; ? of R1 = H; n = 1, 2] are prepd. by (1) reaction of alkoxybenzenes C6H6-n(OR1)n with COCl2 in the presence of a Lewis acid in an arom. hydrocarbon solvent at 0-30? (2) heating to 40-110?to partially or completely dealkylate alkoxybenzophenone intermediates, during or partially after which certain additives are added to avoid stirring problems, and (3) aq. workup by known methods. The additives, relative to total reaction mass, are 1-20 wt.% of linear or cyclic carboxylic or carbonic acid esters, and/or 0-30 wt.% of mono-, di-, or triethylene glycol mono- or di-C1-4-alkyl ethers. For example, g-butyrolactone was used as the additive in the prepn. of 2,2'-dihydroxy-4,4'-dimethoxybenzophenone from 1,3-(MeO)2C6H4, using AlCl3 catalyst and xylene solvent.

回复人：xiaochuan,▲ (专心搞有机精细品的合成研究) 时间：2006-01-15 09:06:25 编辑	2楼
非常感谢提供资料,是否可以把全文发给我?谢谢.

回复人：tangyyer,★★★★★ (有空来逛逛my blog: http://tangyyer.blog.hexun.com) 时间：2006-01-15 09:27:21 编辑	3楼
直接去欧洲专利局下载吧，http://v3.espacenet.com/origdoc?DB=EPODOC&IDX=DE4134773&F=8&QPN=DE4134773

回复人：whitejade,▲ (有点黑) 时间：2006-03-14 09:39:12 编辑	4楼
郭工是你吗? 该篇专利我已经下载下来,可惜是德文的,你如果要可以发给你

得分人：tangyyer-3,

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