4973-24-4Relevant articles and documents
Preparation method of 2,6-ditertbutyl p-alkylphenol
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Paragraph 0041; 0043, (2018/07/30)
The invention discloses a preparation method of 2,6-ditertbutyl p-alkylphenol. The preparation method comprises the following steps of: 1) adding aqueous or alcohol solution of aldehyde and dimethylamine and alcohol solution of 2,6-ditertbutylphenol into a reaction kettle, and reacting to obtain 2,6-ditertbutyl-4-(dimethylaminoalkyl)phenol, wherein the aldehyde is fatty aldehyde with 1-5 carbon atoms; 2) carrying out catalytic hydrogenolysis on 2,6-ditertbutyl-4-(dimethylaminoalkyl)phenol prepared by the step 1) in the reaction kettle to obtain 2,6-ditertbutyl p-alkylphenol. The preparation method disclosed by the invention has the advantages that the raw materials are low in cost and easy in obtaining, no corrosive waste water is caused, the reaction yield is high and the purity and the yield of a product can be up to 98% or more.
LiAIH4 promoted reductive deoxygenation of hydroxybenzyl alcohols via benzoquinone methide intermediates
Baik, Woonphil,Lee, Hyun Joo,Koo, Sangho,Kim, Byeong Hyo
, p. 8125 - 8128 (2007/10/03)
Primary and secondary hydroxybenzyl alcohols react with LiAIH4 in chlorobenzene to give the corresponding alkylphenols. The reaction proceeds through the formation of benzoquinone methide as an intermediate. An example of [4+2] cycloaddition of benzoquinone methide is also reported.