Y Suzuki   K Yamauchi   K Muramatsu   M Sato   
CHEMICAL COMMUNICATIONS 2004(23) 2770-2771 2004年 [査読有り]
Chiral N-heterocyclic carbenes, which are derived from C-2-symmetric 1,3-bis(1-arylethyl) imidazolium salts, catalyze enantioselective acylation of racemic secondary alcohols.
2-Aroylquinoxalines (5, 6), 1-aroylphthalazines (10, 11), and 4-aroylcinnolines (13) were synthesized by using arenecarbaldehydes (2) in the presence of an azolium salt (1) in moderate to good yields. 1,3-Dimethylimidazolium iodide (1a) and sodium...
A Miyashita   Y Suzuki   K Iwamoto   T Higashino   
CHEMICAL & PHARMACEUTICAL BULLETIN 46(3) 390-399 1998年3月 [査読有り]
In the presence of 1,3-dimethylimidazolium iodide (1), 6-chloro-9-phenyl-9H-purine (7) and 4-chloro-5,6-dimethylpyrrolo[2,3-d]pyrimidines 40-42 underwent nucleophilic aroylation with arenecarbaldehydes (5) to give the corresponding fused aroylpyri...
CHEMICAL & PHARMACEUTICAL BULLETIN 46(2) 199-206 1998年2月 [査読有り]
4-(alpha-Benzyl-alpha-hydroxybenzyl)quinazoline (4a) underwent retro-benzoin condensation catalyzed by cyanide ion to give deoxybenzoin (2a) and quinazoline (5a), Similarly, several nitrogen-containing heteroarenes (4, 9, 12, 16-19) having an alph...