Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system
Patent
1991-11-27
1992-07-14
Richter, Johann
Organic compounds -- part of the class 532-570 series
Organic compounds
Four or more ring nitrogens in the bicyclo ring system
544113, 544189, 544198, 544209, 540598, C07D41304, C07D40304
Patent
active
051304295
ABSTRACT:
Process for the methylation of compounds at least one group of the formula (I) ##STR1## by means of a mixture of formaldehyde and formic acid in a reaction medium consisting of an aromatic hydrocarbon solvent.
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Borzatta Valerio
Holer Martin
Orban Ivan
Piccinelli Piero
Ciba-Geigy Corporation
Hall Luther A. R.
Richter Johann
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