... Soc. vol.12 no.3 São Paulo May/June 2001. ... an acetamidooxindole, which upon reaction with P 4 S 10 gives indolothiazoles in moderate to good yields 131 (Scheme 39). ... In the reaction of isatins with some cyclic ketones, such as 4-hydroxy-2H-benzopyran-2-one 417 , the initial ...