Electron impact induced fragmentation of some l-(6'-substituted-4'-methyl-2'-quinolyl)hylpyrazol-5-ols follows a route where the pyrazole moiety is preferentially cleaved with successive losses of two moieties of 41 u. High-resolution measurements have established that the first loss is due to the C
✦ LIBER ✦
Conformational behavior of pheromones and analogues Part I. 3-methyl-2-buten-1-ol, 3,3,6-trimethyl-1, 5- heptadien-4-ol and 2-methyl-6-methylene-2,7-octadien-4- on
✍ Scribed by Jaroslav Koča; Per H.J. Carlsen
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 645 KB
- Volume
- 246
- Category
- Article
- ISSN
- 0022-2860
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## Abstract This paper describes the synthesis and characterisation of 2[[4‐(2,6‐di‐1‐pyrrolidinyl‐4‐pyrimidinyl)‐1‐piperazinyl]‐[^14^C]‐ methyl]‐3,4‐dihydro‐2,5,7,8‐tetramethyl‐2H‐1‐benzopyran‐6‐ol and 2[[4‐(2,6‐di‐1‐pyrrolidinyl‐4‐[^13^C~2~]‐pyrimidinyl)‐1‐ piperazinyl]‐[^13^C]‐methyl]‐3,4‐dihydr