Radical additive cyclization in the reaction of dialkyl maleates and dialkyl fumarates with dibenzoyl peroxide
✍ Scribed by Yu. N. Ogibin; M. N. Élinson; G. I. Nikishin
- Book ID
- 112445060
- Publisher
- Springer
- Year
- 1985
- Tongue
- English
- Weight
- 221 KB
- Volume
- 34
- Category
- Article
- ISSN
- 1573-9171
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The pyrolysis of ethynylbenzene (1) in helium was studied in a tubular flow reactor at 10.7 mbar/103O0C and reaction times ranging from 5 to 30 ms. Reactive intermediates such as radicals and carbenes were scavenged with dimethyl disulfide (DMDS). Qualitative and quantitative analysis of the scaveng
## Abstract The 4‐substituted 1‐phenyl‐1‐butene‐3‐ynes 1a–c and the 2‐ethynylstyrenes 7a–c were subjected to high‐temperature pyrolysis. The cycloisomerization products isolated suggest that these are formed by three competing processes: by (i) an electrocyclic or a molecule‐induced, (ii) an alkeny