The reaction of 2,4,6-triphenyl-1,3,5-thiadiazin-1-ium salt with active methylene compounds.

スポンサーリンク

概要

• 論文の詳細を見る

• The reaction of 2,4,6-triphenyl-1,3,5-thiadiazin-1-ium tetrafluoroborate with several active methylene compounds was studied. Nitromethane and nitroethane gave 2<I>H</I>-1,3,5-thiadiazines. The compounds possessing a benzoyl group reacted with this salt to give 5-substituted 2,4,6-triphenylpyrimidines, while those possessing a carbamoyl group afforded 5-substituted 4-hydroxy-2,6-diphenylpyrimidines or 4(3<I>H</I>)-pyrimidinone. On the other hand, malononitrile and ethyl cyanoacetate gave 5-substituted 4-mercapto-2,6-diphenylpyrimidines, with the liberation of benzonitrile. It was thus found that 2,4,6-triphenyl-1,3,5-thiadiazin-1-ium tetrafluoroborate reacts with active methylene compounds in fashions similar to that of 2,4,6-triphenyl-1,3-thiazin-1-ium salt.

• 公益社団法人 日本化学会の論文

著者

• Shibuya Isao

  National Chemical Laboratory for Industry

関連論文

• Novel and Efficient Synthesis of 4-Dimethylamino-2-glycosylaminoquinazolines by Cyclodesulfurization of Glycosyl Thioureas with Dimethylcyanamide
• Novel Quinazoline Ring Synthesis by Cycloaddition of N-Arylketenimines with N, N-Disubstituted Cyanamides
• A Novel Synthesis of 1,3,5-Triazine Derivative under High Pressure
• Synthesis of β-Lactams from Isocyanates and Vinyl Ethers under High Pressure
• Preparation and reactions of 5-aryl-1,4,2-dithiazolium salts.
• The synthesis of isocyanurates on the trimerization of isocyanates under high pressure.
• Preparation of N-(Substituted formyl) dialkylamino(thioxo)methanesulfenamides.
• Formation of 1,4,2,5-dithiadiazines as a heterocyclic system by reaction of 1,4,2-dithiazolium salts with sulfenamides.
• Reaction of 1,4,2-dithiazolium and 1,3-dithiolium salts with malononitrile.
• The synthesis of 1,3-dithiolan-2-ones on the reaction of oxiranes with carbon disulfide under high pressure.
• The reaction of 2,4,6-triphenyl-1,3,5-thiadiazin-1-ium salt with active methylene compounds.
• The synthesis of heteroaromatic cations containing sulfur or selenium atoms.
• The reaction of oxiranes with carbon disulfide under high pressure.
• The synthesis of 1,3-dithiolane-2-thione derivatives.
• A Method of Synthesizing Pyrimidine Derivatives. II
• Reaction of 1,3-Oxazinium Salt with Active Methylene Compounds
• The synthesis of 1,3,5-thiadiazinylium salts.
• Decomposition reaction of 3-aryl-6-disubstituted amino-1,4,2,5-dithiadiazines in the solid state.
• The reaction of 2,4,6-triphenyl-1,3-oxazinylium perchlorate with amino compounds.
• The reaction of 3,5-diphenyl-1,2-dithiolium perchlorate with active methylenes.
• The reaction of 2,4,6-triphenyl-1,3-thiazinylium perchlorate with active methylenes.

もっと見る 閉じる

スポンサーリンク