作者:Stanislav A. Amelichev、Susana Barriga、Lidia S. Konstantinova、Tatjana B. Markova、Oleg A. Rakitin、Charles W. Rees、Tomás Torroba
DOI:10.1039/b105243h
日期:——
N-Ethyldiisopropylamine, S2Cl2 and DABCO in chloroform at room temperature form intermediate salts which react with nucleophiles to give tricyclic bis[1,2]dithiolo[1,4]thiazine derivatives. The reactions of some representative amino compounds as the nucleophiles are now described. With arenesulfonamides 1a,b and their N,N-dichloro derivatives 2a,b, the N,N′-bis(arylsulfonyl)dithiolothiazinediimines 3a,b are formed in modest yields. With toluene-p-sulfonohydrazide and aniline the more complex reactions give only the monohydrazone 7 and the bicyclic anilino derivative 8, respectively, in very low yields. The diimines 3a,b
are also produced, in better yield, from the bis(1,2-dithiole-3-thione) 4 with chloramine B and T; similarly the analogous monothione 12 gives the monoimines 13a,b. The reaction rates and yields (up to 93%) in the conversion of 12 to 13 are greatly increased by scandium triflate. Possible reaction mechanisms are considered.
N-乙基二异丙胺、二氯化硫(S2Cl2)和DABCO在室温下在氯仿中形成中间盐,这些中间盐与亲核试剂反应,生成三环双[1,2]二硫杂噻嗪衍生物。现在描述一些代表性氨基化合物作为亲核试剂的反应。与芳基磺酸酰胺1a、b及其N,N-二氯衍生物2a、b反应,产生N,N′-双(芳基磺酰)二硫噻嗪双亚胺3a、b,收率适中。与对苯磺酰肼和苯胺的反应较复杂,仅分别生成单肼素7和双环苯胺衍生物8,收率非常低。从双(1,2-二噻唑-3-硫酮)4与氯胺B和T反应时,二亚胺3a、b也以更好的收率生成;类似地,类似的单硫酮12生成单亚胺13a、b。12转化为13的反应速率和收率(高达93%)在三氟化钪的作用下大大提高。考虑了可能的反应机制。