Neat (solventless) hydrogenation of 4-acetoxyacetophenone in the

Details Neat (solventless) hydrogenation of 4-acetoxyacetophenone in the Neat (solventless) hydrogenation of 4-acetoxyacetophenone in the

1990-07-25

1992-01-28

Bleutge, John C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525371, C08F 200

Patent

active

050845330

ABSTRACT:
A process for the solventless (neat) hydrogenation of 4-acetoxyacetophenone to produce 4-acetoxyphenyl methylcarbinol. The reaction proceeds by heating at 54.degree. C. to 120.degree. C. with an excess of hydrogen in the presence of a Pd/C or activated nickel such as Raney Nickel catalyst in the absence of a solvent. The 4-acetoxyphenyl methylcarbinol may then be dehydrated to 4-acetoxystyrene. The later may be polymerized to poly(4-acetoxystyrene) and hydrolyzed to poly(4-hydroxystyrene).

REFERENCES:
Corson et al., "Preparation of Vinylphenols and Isopropenylphenols", J. Org. Chem, 9-1957.

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