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2004
Halogenation
O 0235
Side Chain Bromination of Mono and Dimethyl Heteroaromatic and Aromatic
by Solid Phase N-Bromosuccinimide Reaction Without Radical Ini49- 048 Compounds
tiator under Microwave. — For the title reaction, the mono and dibromo derivatives
are exclusively preferred except in the case of 6-methylpyridines, such as (VIII), where
nuclear and also side chain bromination occurs. By this method, the synthesis of 2-pivaloylaminopterin-6-carbaldehyde (XVIII) is also achieved. — (GOSWAMI*, S.; DEY,
S.; JANA, S.; ADAK, A. K.; Chem. Lett. 33 (2004) 7, 916-917; Dep. Chem., Bengal
Eng. Coll., Howrah 711 103, India; Eng.) — M. Paetzel
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