Process for preparing 3-fluoro-4,6-dichlorotoluene
3-Fluoro-4,6-dichlorotoluene is prepared with reduced formation of 3-fluoro-2,6-dichlorotoluene by chlorinating 3-fluorotoluene in the presence of a catalyst system to give a mixture containing 3-fluoro-6-chlorotoluene and 3-fluoro-4-chlorotoluene and chlorinating this in the presence of another catalyst system to give 3-fluoro-4,6-dichlorotoluene.
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(2008/06/13)
Oxazepines and thiazepines, XXV: Chemical transformations of 2,3-dihydro-1,5-benzothiazepin-4(5H)-ones
2,3-Dihydro-1,5-benzothiazepine-4(5H)-thiones 13-22 were prepared by the reaction of the appropriate 2,3-dihydro-1,5-benzothiazepin-4(5H)-ones with Lawesson's reagent. N-Acyl (23-25) and N-alkyl (26-28) derivatives have also been synthesized. Oxidation wi
Levai
p. 721 - 726
(2007/10/02)
Studies on annelated 1,4-benzothiazines and 1,5-benzothiazepines. III. Synthesis and CNS activity of some 1-substituted derivatives of the novel heterocyclic system 4,5-dihydro-s-triazolo [3,4-d]-1,5-benzothiazepine
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Ambrogi,Grandolini,Rossi,Tiralti
p. 575 - 583
(2007/10/02)
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