trrf-Butyl and 2,6-di(tert-butyl)-4-methylphenyl (RHT) cyclopropanecarboxylates (4, 6, 24, 25) are lithiated with LiN(i-Pr), and t -BuLi, respectively. Reactions with alkyl halides, aldehydes, acyl chlorides, and heteroelectrophiles give a-substituted BHT esters which can be cleaved (t-BuOK/H,O/THF)
The bromination of 1,4-Di-tert.Butylbenzene: Synthesis of 1,4-di-tert.butyl-2-bromobenzene and some tert.butyl-dibromobenzenes
β Scribed by J. M. A. Baas; B. M. Wepster
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 539 KB
- Volume
- 85
- Category
- Article
- ISSN
- 0165-0513
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Recently we have tried to synthesize cyclobutadienes stabilized by steric hindrance due to bulky substituents (2,3). In this paper we report our attempts to obtain benzocyolobutadienes bearing one or two tM.-butyl groups grafted on the four-membered ring. By treatment of trans-1.2-dibromo-benzocyclo
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The Reactions of 3,6-Di-tert-butyl-1,2-benzoquinone and 3,6-Ditert-butylcatechol with tert-Butyl Hydroperoxide. -The reaction of the title quinone (I) as well as its corresponding catechol with tert-butyl hydroperoxide in aprotic solvents results in ring oxidation accompanied by ring expansion furn