Benzothiazolium iodide reaction with amines

The reaction of benzothiazolium iodide (105) with 2 mol of a primary alii tic amine or 1 mol each of an aromatic amine and triethylamine gave benzothiazolimine (106). Methylation of (106) and subsequent treatment of the resulting amidinium salts (107) with butylamine afforded the corresponding fV-methyl-amine (Scheme 47). ... 

Ri = H) with base and nonactivated Mn02 in ethanol afforded the corresponding ethyl esters. This type of oxidative reaction could be also achieved in THF with different nucleophiles, such as alcohol, water, thiol, and amine, to give the corresponding ester, carboxylic acid, thioester, and amide, respectively (scheme-36) (Chikashita et ah 1991). Riemer and Liebscher (1993) have described the synthesis of pyrimido[2,l-fc]benzoxazolium, pyrimido[2,l-fc]benzothiazolium salt (134) by the reaction of 3-isothiocyanato-2-propeniminium salts with 2-aminothiophenol followed by cyclization using methyl iodide by a new condensation reaction (Riemer Liebscher 1993). 

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See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ ]

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