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)
(2,4-Di-(tert-butyl)-6-methylphenyl)dithiophosphorane
✍ Scribed by A. S. Ionkin; V. M. Nekhoroshkov; Yu. Ya. Efremov
- Book ID
- 112448796
- Publisher
- Springer
- Year
- 1991
- Tongue
- English
- Weight
- 155 KB
- Volume
- 40
- Category
- Article
- ISSN
- 1573-9171
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## Abstract The crystal structures of molecules with two phosphaalkene groups have been determined. Differences in the stabilization of the PC π‐bond by the 2,4,6‐tri‐__tert__‐butylphenyl and 2,4‐di‐__tert__‐butyl‐6‐methylphenyl groups were observed. It has been found that lithium supermesityl(tri
In the title compound, C 21 H 26 N 2 O 3 , the molecule adopts an E configuration about the central C N double bond and exists in the phenol-imine tautomeric form. The two benzene rings make a dihedral angle of 38.5 (4) . Intramolecular O-HÁ Á ÁN hydrogen bonding is present.