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1. For a review see Balasubramanian, M; Keay, J. G. in Comprehensive Heterocyclic Chemistry II; Katritzky, A. R.; Rees, C. W.; Scriven, E. F. V., Eds.; Pergamon Press, 1996, 5, pp 245-300.
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0013556540
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see following paper in this issue
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7. Nadin, A.; Harrison, T. see following paper in this issue.
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0001426452
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19
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0013491571
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note
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13. This can be considered as the result of the reaction of 6 with two equivalents of the Vilsmeier reagent to give aminomethylenation of the enamine functionality and chlorination of the amide. Ring closure and elimination of dimethylamine generates the 1-methyl-2-chloro-3-benzyloxy-5,6-diarylpyridinium species.
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20
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84947151032
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21
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0013519966
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note
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4), filtered and concentrated. The products were triturated as necessary to give solid material which was of purity 95-99% as measured by hplc.
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22
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33847088408
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0000078939
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0000202502
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85082976445
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Pedrini, P.5
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29
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0013559882
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note
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1H NMR and MS data.
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