Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2005-08-23
2005-08-23
Saeed, Kamal A. (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
Reexamination Certificate
active
06933403
ABSTRACT:
A process for a mono carbonylation of a benzenediol of the formula (I) is characterized in that a benzene diol of the formula (II) is reacted with an acid anhydride or carbonyl halide of the formula (III) without any organic or inorganic bases for thereby producing a monocarbonylated benzenediol of the formula (I):wherein R is hydrogen, C1-C15alkyl group, cycle alkyl group, aryl group, alkoxy group, aryloxy group, dialkylamino group, alkylarylamino group or diarylamino group, and X is a general leaving group such as fluoride, chloride, bromide, iodide, acetoxy, etc.
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Xia et al., “Study on Synthesis of 1,4-Benzenediol Monoacetate”, Journal of China University of Mining & Technology 2001: 30(6), 11-12.
Tangestaninejad et al., “Rapid and Efficient Acetylation of Alcohols and Phenols with Acetic Anhydride Using Tin(IV) Porphyrin as Catalyst”, Synthetic Communications, 2002: 32(9), 1337-1343.
Kim Bum-Tae
Kim Ki-Ho
Kim Ki-Soo
Lee Yeon-Soo
Min Yong-Ki
Bioland Co., Ltd.
Coleman Henry D.
Korea Research Institute of Chemical Technology
Saeed Kamal A.
Sapone William J.
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