𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Multiple thermal rearrangements. : IV. The pyrolysis of 2-(4-pentenyl)-dihydrotropone

✍ Scribed by Leonard Hodakowski; Chris A. Cupas

Publisher
Elsevier Science
Year
1973
Tongue
French
Weight
162 KB
Volume
14
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis

In previous studies we have shown that the thermal rearrangement of appropriately substituded cycloheptatrienes and dihydrotropones provides a facile synthetic entry to new bridged polycyclic systems. For example, pyrolysis of 7-allyloxycycloheptatriene (lJ produces, in high yield, equal amounts of 2-protoadamantenone (3) and lo-protoadamantenone (i).' These tricyclics are [n2s + n4s] cycloaddition products derived from 2-allyl-2,3-dihydrotropone (a which is gen-\ 8

πŸ“œ SIMILAR VOLUMES

Multiple thermal rearrangements. III. Th
Multiple thermal rearrangements. III. The pyrolysis of 7-(3-butenyl)-cycloheptatriene
✍ C.A. Cupas; M.S. Kong; M. Mullins; W.E. Heyd πŸ“‚ Article πŸ“… 1971 πŸ› Elsevier Science 🌐 French βš– 154 KB

Nechanistic aspects of thermal sigmatropic rearrangements in cycloheptatrienes have been studied extensively.2 In contrast, the synthetic potential of these isomerization reactions has been exploited only recently. For example, a facile entry to tricyclo[4.3.1.03g8]decane (protoadamantane) derivativ

The thermal rearrangements of 1,1,2,2,4,
The thermal rearrangements of 1,1,2,2,4,4-hexafluorospiropentane and perfluorospiropentane
✍ William R. Dolbier Jr.; Simon F. Sellers; Bruce E. Smart πŸ“‚ Article πŸ“… 1981 πŸ› Elsevier Science 🌐 French βš– 196 KB

The title compounds were synthesized via CF2: addition to the respective methylenecyclopropanes. The hexafluorospiropentane thermally rearranges to 2,2,4,4-tetrafluoro-l-(difluoromethyiene)cyclobutane in competition with CF2: extrusion, whereas perfluorospiropentane decomposes exclusively by CF2: e

Thermal Rearrangements, XX[1] The Kineti
Thermal Rearrangements, XX[1] The Kinetics of Thermal Isomerisation of 4-Methyl-1,2,5-hexatriene in the Gas Phase
✍ Hopf, Henning ;Wachholz, Gerhard ;Walsh, Robin πŸ“‚ Article πŸ“… 1992 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 931 KB

4‐Methyl‐1,2,5‐hexatriene (13) has been prepared and subjected to gas‐phase pyrolysis. Above 220Β°C, 13 rearranges reversibly to both __trans__‐5‐hepten‐1‐yne (14) and its __cis__‐isomer 15. Formation of 14 is faster than that of 15. These isomerisations are accompanied by a slower irreversible rearr