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B(C6F5)3-Catalyzed formal (4+1)-annulation of ortho-quinone methides with diazoacetates: access to 2,3-dihydrobenzofurans.
Xu, Guangyang; Tang, Shengbiao; Shao, Ying; Sun, Jiangtao.
Affiliation
  • Xu G; Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China. jtsun@cczu.edu.cn jtsun08@gmail.com.
  • Tang S; Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China. jtsun@cczu.edu.cn jtsun08@gmail.com.
  • Shao Y; Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China. jtsun@cczu.edu.cn jtsun08@gmail.com.
  • Sun J; Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China. jtsun@cczu.edu.cn jtsun08@gmail.com.
Chem Commun (Camb) ; 55(62): 9096-9099, 2019 Aug 11.
Article in En | MEDLINE | ID: mdl-31297497
A novel (4+1)-cycloaddition reaction of alkyne-tethered ortho-quinone methides with diazoacetates has been well established by using B(C6F5)3 as the catalyst, providing 2,3-dihydrobenzofuran derivatives containing a newly formed quaternary carbon center in good yields and diastereoselectivities (up to >19 : 1 dr).
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Chem Commun (Camb) Journal subject: QUIMICA Year: 2019 Document type: Article Country of publication: United kingdom
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Chem Commun (Camb) Journal subject: QUIMICA Year: 2019 Document type: Article Country of publication: United kingdom