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Difluorocarbene-enabled access to 1,3-oxazin- 6-ones from enamides
《Organic Chemistry Frontiers》2022年第5期1282-1287,共6页Shuai Wang Xin Li Shengnan Jin Kang Liu Cong Dong Jianke Su Qiuling Song 
Financial support from the National Natural Science Foundation of China(21931013);Guangdong Provincial Key Laboratory of Catalysis(No.2020B121201002);the Open Research Fund of School of Chemistry and Chemical Engineering,Henan Normal University is gratefully acknowl-edged.
1,3-Oxazin-6-ones as important structural scaffolds widely exist in many bioactive or therapeutic agents.The development of straightforward synthetic approaches to access 1,3-oxazin-6-ones is highly desirable for stud...
关键词：STRAIGHT desirable 
Selective electrophilic di- and monofluorinations for the synthesis of 4-difluoromethyl and 4-fluoromethyl quinazolin(thi)ones by a Selectfluor-triggered multi-component reaction
《Organic Chemistry Frontiers》2022年第6期1567-1573,共7页Ruiqin Zhang Renchao Ma Qinjiao Fu Rener Chen Zhiming Wang Lei Wang Yongmin Ma 
supported by the Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang(No.2019R01005).
A simple and efficient domino protocol for the selective synthesis of 4-difluoromethyl and 4-fluoromethylquinazolin(thi)ones was established from readily available 2-aminoacetophenones and iso(thio)cyanatesmediated by...
关键词：conditions PRODUCT synthesis 
Rh-Catalyzed oxidation and trifluoroethoxylationof N-aryl-pyrrolidin-2-ones: a domino approachfor the synthesis of N-aryl-5-(2,2,2-trifluoroethoxy)-1,5-dihydro-2H-pyrrol-2-ones
《Organic Chemistry Frontiers》2022年第6期1593-1598,共6页Yang Luo Mingli Hu Jun Ge Bin Li Ling He 
support from the National Science Foundation of China(No.21072131);Sichuan University-Lu Zhou Strategic Cooperation Projects(No.2017CDLZ-S34)。
The synthesis of trifluoroethoxylated dihydropyrrolidones via rhodium-catalyzed oxidation and trifluoroethoxylation of pyrrolidones is presented in this paper. This process realized the trifluoroethoxylation ofnon-act...
关键词：DOMINO synthesis approach 
Transition-metal-free synthesis of 4-aminoisoquinolin-1(2H)-ones via a tandem reactionof arynes and oxazoles
《Organic Chemistry Frontiers》2022年第6期1550-1555,共6页Shaojun Liu Pei Xie Leifang Wu Jixing Zhao Zhihua Cai Lin He 
supported by the National Natural Science Foundation of China(No.22161039);the Excellent Young Teachers Plan of Bingtuan(2017CB001 and CZ027203,CZ002203);the International Cooperation Project of Shihezi University(No.GJHZ201801).
A facile and transition-metal-free method for the synthesis of 4-amino isoquinolin-1(2H)-ones has beendeveloped. Arynes react with 4,5-disubstituted oxazoles through a tandem Diels–Alder reaction/dehydrogenation–aro...
关键词：synthesis TRANSITION 
Diastereodivergent synthesis of fully disubstituted spiro[indoline-3,2’-pyrrolidin]-2-ones via tuneable Lewis base/Brønsted base-promoted(3+2)cycloadditions
《Organic Chemistry Frontiers》2022年第1期19-24,共6页Ke Li Zhipeng Zhang Jiahui Zhu Yuxin Wang Jing Zhao Er-Qing Li Zheng Duana 
the National Natural Science Foundation of China(21702189,21672193,and 21272218);the Key Scientific and Technological Project of Henan Province(202102310004);the China Ministry of Industry and Information Technology(Z135060009002);Zhengzhou University(JC21253007)of China for financial support of this research.
Herein we report a diastereodivergent synthesis of fully disubstituted spiro[indoline-3,2’-pyrrolidin]-2-ones through base-promoted(3+2)cycloadditions.Importantly,the catalysts are found to have full control over the...
关键词：BASE stereo substituted 
DBU-catalyzed dearomative annulation of 2-pyridylacetates withα,β-unsaturated pyrazolamides for the synthesis of multisubstituted 2,3-dihydro-4H-quinolizin-4-ones
《Organic Chemistry Frontiers》2022年第1期88-94,共7页Yao-Bin Shen Jian-Qiang Zhao Zhen-Hua Wang Yong You Ming-Qiang Zhou Wei-Cheng Yuan 
the National Natural Science Foundation of China(No.22171029,21901024,21871252,21801024,and 21801026);the Sichuan Science and Technology Program(2021YFS0315);the Talent Program of Chengdu University(2081919035 and 2081921038).
The reaction of 2-pyridylacetates andα,β-unsaturated pyrazolamides with DBU as the catalyst has been developed.A range of unexplored multisubstituted 2,3-dihydro-4H-quinolizin-4-ones are obtained with satisfactory y...
关键词：process SUBSTITUTED UNSATURATED 
Gold-catalysed synthesis of phosphonatesubstituted oxetan-3-ones–an easy access to highly strained HWE reagents
《Organic Chemistry Frontiers》2022年第1期117-122,共6页Shaista Tahir Jonas F.Wunsch Matthias Rudolph Frank Rominger A.Stephen K.Hashmi 
S.T.acknowledges the financial support by the DAAD PhDprogram;J.F.W.thanks the support from the Hector Fellow Academy;The authors acknowledge the support by the state of Baden-Württemberg through bwHPC.
A convenient approach for the attainment of strained phosphonate-substituted oxetan-3-ones,starting from easy to synthesise alkynyl phosphonates,is presented.With the aid of a pyridine-N-oxide,in a goldcatalysed step...
关键词：reaction SUBSTITUTED synthesis 
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