Whereas sulfenyl reagents commonly add to carbon double bonds, addition to sulfur of 3-methylthio-1-butene precedes attack at carbon to give allylic thiosulfonium ions that form reversibly and which rearrange rapidly to trans-2-butenyl analogs. Likewise, rearrangement of cis-to trans-1-methylthio-2
Dibutyl cis- and trans-1-butene-1-boronate
โ Scribed by Gene D. Schaumberg; Stephen Donovan
- Book ID
- 108346888
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- English
- Weight
- 243 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0022-328X
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
The position of abstraction by H atoms from ethylene, propylene, butene-1, and cisand trans-butene-2 and the rates of abstraction relative to addition have been measured at 25ยฐC. From ethylene, abstraction relative to addition was 5 3 X lo-\*. For propylene, butene-1, cis-butene-2, and trans-butene
H2S increases the thermal isomerization of butene-2 cis (B,) to butene-1 (B1) and butene-2 trans (Bt) around 500ยฐC. This effect is interpreted on the basis of a free radical mechanism in which buten-2-yl and thiyl free radicals are the main chain carriers. B1 formation is essentially explained by th