wittig

wittig

1. (5) alkylphosphonium wittig reagents and the wittig reactions with them;

(5)烷基膦wittig反应试剂的研究;

2. aza--Wittig reaction

aza-Wittig反应

3. Wittig - Homor reaction

Wittig-Homor缩合

4. A group of multi substituted phenols were prepared via intramolecular wittig reaction of a kind of long chain phosphonic ylides.

一类含六个碳的长链叶立德通过分子内维蒂希反应可生成含氟多取代苯酚 .

5. The key step in the synthesis is Wittig coupling of farnesyltriphenylphosphonium bromide (8) with ethyl 2-oxo-3-methyl butyrate (3). (3) was prepared by Grignard reaction of ethyl oxalate with iso-propylmagnesium bromide.

其中关键步骤是溴化法呢基三苯基?(8)和2-氧代-3-甲基丁酸乙酯(3)的Wittig反应。

6. Keywords 10-Undecenoic acid;Ozonization;Wittig reaction;Sex pheromones;

十一碳烯酸;臭氧化;维悌希反应;性信息素;

7. wittig reagent

威蒂希试剂

8. wittig ether rearrangement

威蒂希醚重排 维蒂希醚重排

9. Medium free wittig reaction of stabilized ylides with ketones under microwave irradiation

无介质微波作用下酮与稳定叶立德的反应

10. Ylides containing carboxy and amino group and their Wittig reactions

有羧基、氨基存在的叶立德及其Wittig反应

11. DETERMINATION OF Z/E RATIO OF WITTIG REACTION PRODUCT BY CAPILLARY COLUMN GC/MS

毛细管色谱/质谱测定Wittig反应产物的顺反比值

12. aza - Wittig reaction

氮杂Wittig反应

13. Keywords methoxyl;stilbene. Wittig SHG. CNDO/S-CI;

甲氧基;二苯乙烯反应;魏狄希;倍频;

14. Keywords resveratrol,anti-cancer drug,Wittig reaction,3,5-dihydroxytoluene;

白藜芦醇;抗癌药;维悌希反应;3;5-二羟基甲苯;

15. Phase-transfer Wittig reaction

相转移Wittig反应

16. STUDY ON PHASE TRANSFER CATALYTIC WITTIG REACTION

相转移催化维悌希反应研究

17. Wittig reaction

维蒂希反应

18. The calculated results show that the aza Wittig reaction is a two step reaction, having one four membered ring intermediate on its reaction surface.

计算结果表明该反应是一个二步反应，在反应途径上存在一个四元环中间体。

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