Abstract

Transesterification of commercial titanium(IV) alkoxides with 2,2,3,3-tetrafluoropropan-1-ol, followed by in situ transesterification of mixed titanium(IV) alkoxides thus formed with diphenyl carbonate, afforded alkyl 2,2,3,3-tetrafluoropropyl carbonates and bis(2,2,3,3-tetrafluoropropyl) carbonate in up to 60% yield. The degree of transesterification decreased in the series (i-PrO)₄Ti > (EtO)₄Ti > (BuO)₄Ti and did not exceed 68%. The selectivity for alkyl 2,2,3,3-tetrafluoropropyl carbonates and bis(2,2,3,3-tetrafluoropropyl) carbonate was found to change depending on the composition of mixed titanium(IV) alkoxide formed in situ.

中文翻译：

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合成多氟化碳酸盐的新方法

摘要

商业钛（IV）醇盐与2,2,3,3-四氟丙烷-1-醇的酯交换反应，然后将混合的钛（IV）醇盐与碳酸二苯酯进行原位酯交换，得到烷基2,2,3,3 -碳酸四氟丙基酯和碳酸双（2,2,3,3-四氟丙基）酯的产率高达60％。（i- PrO）₄ Ti>（EtO）₄ Ti>（BuO）₄ Ti系列的酯交换度降低，且不超过68％。发现对于碳酸2,2,3,3-四氟丙基烷基酯和碳酸双（2,2,3,3-四氟丙基）烷基酯的选择性根据在现场形成的混合的钛（IV）醇盐的组成而变化。