Three-component cyclocondensations. Two methods for the efficient preparation of 5-aminothiazolium salts via the reaction of isocyanides either with dimethylthioformamide and imino chloro sulfides or benzaldimines and aryl chlorothioformates
摘要:
Treatment of imino chloro sulfides with dimethylthioformamide and isocyanides at room temperature provides selectively the 5-amino-4-(dimethylamino)-2-(methylthio)(or phenylthio)thiazolium salts. Similarly, the reactions of p-tolyl chlorothionoformate and phenyl chlorodithioformate with a mixture of benzaldimine and isocyanide afford rapidly the 5-amino-4-phenylthiazolium salts. We suggest that these reactions involve the N-(thiocarbonyl)formamidinium and benzylideniminium chlorides as transient intermediates, which are trapped by isocyanides according to a [1 + 4] cycloaddition process. The structure of the thiazolium salts and some of their reactivities are discussed.
FUNCTIONALIZED SILANES AND ELECTROLYTE COMPOSITIONS AND ELECTROCHEMICAL DEVICES CONTAINING THEM
申请人:Silatronix, Inc.
公开号:US20170301953A1
公开(公告)日:2017-10-19
Described are compounds of the structure R4—
a
—Si—(Sp-Y)
a
—Z
b
, wherein “a” is integer from 1 to 4; “b” is an integer from 0 to (3×a); “Z,” which is absent when “b”“R” or formula (II), wherein each “R” is halogen, C
1-6
linear or branched alkyl, alkenyl, or alkynyl or C
1-6
linear or branched halo-alkyl, halo-alkenyl, or halo-alkynyl; each “Sp” C
1-15
linear or branched alkylenyl or CMS linear or branched halo-alkylenyl; and each “Y” an organic polar group. Also described are electrolyte compositions containing one or more of these compounds.