PBr3-mediated [5+1] annulation of alpha-alkenoyl-alpha-carbamoyl ketene-S,S-acetals: access to substituted pyridine-2,6(1H,3H)-diones

Shi Liping; Zhang Qian; Gan Fengjiao; Zhang Rui; Ding Yuanli; Liu Chun; Dong Dewen

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PBr3-mediated [5+1] annulation of alpha-alkenoyl-alpha-carbamoyl ketene-S,S-acetals: access to substituted pyridine-2,6(1H,3H)-diones

机译：PBR3介导的[5 + 1]α-链烯酰基-Anala-carbamoyl酮-S，S-缩醛的环节：进入取代的吡啶-2,6（1H，3H） - 二酮

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摘要

A facile and efficient synthesis of substituted pyridine-2,6(1H,3H)-diones via an intramolecular [5 + 1] annulation of readily available alpha-alkenoyl-alpha-carbamoyl ketene-S,S-acetals mediated by phosphorus bromide (PBr3) under very mild conditions is described.

机译：通过分子内的α-链烯酰基-Anala-carbamoyl酮-S，S-丙烯酰基（描述了在非常温和的条件下的PBR3。

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来源
《RSC Advances》 |2015年第101期|共5页
作者
Shi Liping; Zhang Qian; Gan Fengjiao; Zhang Rui; Ding Yuanli; Liu Chun; Dong Dewen;
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Beihua Univ Coll Chem &

Biol Beihua 132013 Jilin Peoples R China;

Chinese Acad Sci Changchun Inst Appl Chem Key Lab Synthet Rubber Changchun 130022 Peoples R China;

Chinese Acad Sci Changchun Inst Appl Chem Key Lab Synthet Rubber Changchun 130022 Peoples R China;

Chinese Acad Sci Changchun Inst Appl Chem Key Lab Synthet Rubber Changchun 130022 Peoples R China;

Chinese Acad Sci Changchun Inst Appl Chem Key Lab Synthet Rubber Changchun 130022 Peoples R China;

Beihua Univ Coll Chem &

Biol Beihua 132013 Jilin Peoples R China;

Chinese Acad Sci Changchun Inst Appl Chem Key Lab Synthet Rubber Changchun 130022 Peoples R China;

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正文语种 eng
中图分类化学;
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1. PBr3-mediated [5+1] annulation of alpha-alkenoyl-alpha-carbamoyl ketene-S,S-acetals: access to substituted pyridine-2,6(1H,3H)-diones [J] . Shi Liping, Zhang Qian, Gan Fengjiao, RSC Advances . 2015,第101期

机译：PBR3介导的[5 + 1]α-链烯酰基-Anala-carbamoyl酮-S，S-缩醛的环节：进入取代的吡啶-2,6（1H，3H） - 二酮
2. One-Pot Synthesis of Substituted Isothiazol-3(2H)-ones: Intramolecular Annulation of α-Carbamoyl Ketene-S,S-acetals via PIFA-Mediated N-S Bond Formation [J] . Jie Huang, Yumei Lu, Baofu Qiu, Synthesis: International Journal of Methods in Synthetic Organic Chemistry . 2007,第18期

机译：一锅合成的取代异噻唑-3（2H）-一：通过PIFA介导的N-S键形成的α-氨基甲酰基酮-S，S-缩醛的分子内环化。
3. TWO PYRIDINE-2,6(1H,3H)-DIONE ALKALOIDS FROM SPERANSKIA TUBERCULATA [J] . Shi JG, Wang HQ, Wang M, Phytochemistry . 1995,第4期

机译：蛇柏中的两种吡啶-2,6（1H，3H）-二酮碱
4. Glassy 2-(1-benzyl-2-styryl-6-methylpyridin-4(1-H)-ylidene) fragment containing 1H-indene-1,3(2H)-dione and pyrimidine-2,4,6(1H,3H,5H)-trione derivatives with light-emitting and amplified spontaneous emission properties [C] . Elmars Zarins, Julija Pervenecka, Elina Misina, Conference on Fiber Lasers and Glass Photonics: Materials through Applications . 2020

机译：含1H-茚-1,3（2H）-二酮和嘧啶-2,4,6（1H）的玻璃状2-（1-苄基-2-苯乙烯基-6-甲基吡啶-4（1-H）-亚烷基）片段具有发光和放大的自发发射特性的3H，5H）-三酮衍生物
5. Phosphine-catalyzed 5+1 annulation of δ-sulfonamido-substituted enones with N-sulfonylimines: a facile synthesis of tetrahydropyridines [O] . Leijie Zhou, Chunhao Yuan, Yuan Zeng, 2018

机译：膦催化的5 + 1与N-磺酰亚胺类化合物的δ-磺酰胺基取代的烯酮环化反应：四氢吡啶的简便合成
6. 4-(4-Methoxyphenyl)-1-phenylpyridine-2,6(1H,3H)-dione [O] . Das, Ushati, Chheda, Shardul B., Pednekar, Suhas R., 2009

机译：4-（4-甲氧基苯基）-1-苯基吡啶-2,6（1H，3H）-二酮

PBr3-mediated [5+1] annulation of alpha-alkenoyl-alpha-carbamoyl ketene-S,S-acetals: access to substituted pyridine-2,6(1H,3H)-diones

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