Dibromoketene is prepared by in-situ Zn dehalogenation of tribromoacetyl bromide in the presence of POC1,. Under these conditions, the cycloaddition of dibromoketene with olefins 5 yields a,&-dibromocyclobutanones 2, which are cleaved with alkoxides to yield@-dibromomethyl esters 4. Several examples
✦ LIBER ✦
A Safe and Scalable Procedure for Preparation of α-Picoline–Borane from Sodium Mono-acyloxyborohydrides and α-Picoline
✍ Scribed by Kawase, Yasushi; Yamagishi, Takehiro; Kutsuma, Teruo; Zhibao, Huo; Yamamoto, Yoshinori; Kimura, Tomohiro; Nakata, Tadashi; Kataoka, Tadashi; Yokomatsu, Tsutomu
- Book ID
- 111918067
- Publisher
- American Chemical Society
- Year
- 2012
- Tongue
- English
- Weight
- 226 KB
- Volume
- 16
- Category
- Article
- ISSN
- 1083-6160
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