39507-96-5Relevant articles and documents
Access to "friedel-Crafts-Restricted" tert -alkyl aromatics by activation/methylation of tertiary benzylic alcohols
Hartsel, Joshua A.,Craft, Derek T.,Chen, Qiao-Hong,Ma, Ming,Carlier, Paul R.
experimental part, p. 3127 - 3133 (2012/05/20)
Herein we describe a two-step protocol to prepare m-tert-alkylbenzenes. The appropriate tertiary benzylic alcohols are activated with SOCl2 or concentrated HCl and then treated with trimethylaluminum, affording the desired products in 68-97% yields (22 examples). This reaction sequence is successful in the presence of a variety of functional groups, including acid-sensitive and Lewis-basic groups. In addition to t-Bu groups, 1,1-dimethylpropyl and 1-ethyl-1-methylpropyl groups can also be installed using this method.
SYNTHESIS OF A CARBOCYCLIC ANALOG OF QUERCETIN VIA A BARBIER REACTION
Shih, Neng-Yang,Mangiaracina, Pietro,Green, Michael J.,Ganguly, Ashit K.
, p. 5563 - 5566 (2007/10/02)
A six-step synthetic route to the carbocyclic flavonoid 2 is described.The key step involves a 1,4-addition of a tertiary bromide to a α,β-unsaturated ester by the Barbier reaction.
The , -dimethyl-3,5-dimethoxybenzyloxycarbonyl (Ddz) residue, an N-protecting group labile toward weak acids and irradiation
Birr,Lochinger,Stahnke,Lang
, p. 162 - 172 (2007/10/07)
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