Recent Advances on High-Order Dipolar Annulations of Donor–Acceptor Cyclopropanes/Cyclobutanes DOI
Shiyong Peng, Liangliang Yang, Haiyang Wang

и другие.

Synthesis, Год журнала: 2023, Номер 56(03), С. 389 - 398

Опубликована: Авг. 16, 2023

Abstract This short review summarizes the recent impressive developments on high-order dipolar annulations (HODAs) of donor–acceptor cyclopropanes (DACs) and cyclobutanes (DABs) to afford medium-sized (hetero)cycles. 1 Introduction 2 (3+m) (m > 3) Annulations Donor–Acceptor Cyclopropanes 2.1 (3+4) 2.2 (3+5) 3 (4+m) 2) Cyclobutanes 4 Conclusion

Язык: Английский

Palladium-Catalyzed [3 + 2] Cycloaddition of 4-Vinyl-4-butyrolactones with Ketenes Generated in Situ from Acyl Chlorides: A Method for the Synthesis of Dihydrofurans DOI
Yujie Dong, Sen Yang, Yi Tang

и другие.

Organic Letters, Год журнала: 2024, Номер 26(10), С. 2057 - 2061

Опубликована: Март 1, 2024

In this paper, palladium-catalyzed [3 + 2] cycloaddition of 4-vinyl-4-butyrolactones with ketenes generated from easily available acyl chlorides was achieved. With Pd2(dba)3·CHCl3/XantPhos as the catalyst, reaction proceeded smoothly under mild conditions, affording a series 2,3-dihydrofurans in moderate to high yields. The scale-up and further transformations products are demonstrated, plausible mechanism is proposed well.

Язык: Английский

Процитировано

5
Palladium‐Catalyzed (5+3) Annulation of 4‐Vinyl‐4‐Butyrolactones with C,N‐Cyclic Azomethine Imines: Construction of Eight‐Membered Ring DOI
Sen Yang, Kuan Li, Yi Tang

и другие.

Advanced Synthesis & Catalysis, Год журнала: 2022, Номер 364(22), С. 3967 - 3972

Опубликована: Окт. 18, 2022

Abstract In this paper, we designed and synthesized 4‐vinyl‐4‐butyrolactone as a precursor to generate the zwitterionic allylpalladium intermediates, which behaved five‐membered all‐carbon synthon in palladium‐catalyzed (5+3) annulation with azomethine imines, giving eight‐membered ring‐fused heterocycles (26 examples, 49% 97% yield, >20:1 dr). magnified image

Язык: Английский

Процитировано

19
Construction of enantioenriched eight-membered lactones via Pd-catalyzed asymmetric (6+2) dipolar annulation DOI

Baocheng Wang,

Wei Yi,

Feng-Ya Xiong

и другие.

Science China Chemistry, Год журнала: 2022, Номер 65(12), С. 2437 - 2443

Опубликована: Ноя. 3, 2022

Язык: Английский

Процитировано

18
C-3 Functionalization of 2-Aryl-2H-indazoles under Photo/Electrocatalysis DOI Open Access
Danfeng Wang, Jin Wang, Chunhua Ma

и другие.

Chinese Journal of Organic Chemistry, Год журнала: 2022, Номер 42(12), С. 4024 - 4024

Опубликована: Янв. 1, 2022

2H-Indazole is a privileged scaffold widely existing in drugs and bioactive molecules.The C-H functionalization of 2H-indazole the cutting edge medicinal chemistry organic chemistry.Compared with traditional synthetic methods, visible light/electrochemical-promoted method has mild conditions an environmentally friendly strategy.The 2-aryl-2H-indazoles at C-3 position catalyzed by photochemical/electrochemical strategies recent years summarized terms catalytic systems, special emphasis on corresponding reaction mechanism, which might inspire further development new methods.

Язык: Английский

Процитировано

17
Recent Advances on High-Order Dipolar Annulations of Donor–Acceptor Cyclopropanes/Cyclobutanes DOI
Shiyong Peng, Liangliang Yang, Haiyang Wang

и другие.

Synthesis, Год журнала: 2023, Номер 56(03), С. 389 - 398

Опубликована: Авг. 16, 2023

Abstract This short review summarizes the recent impressive developments on high-order dipolar annulations (HODAs) of donor–acceptor cyclopropanes (DACs) and cyclobutanes (DABs) to afford medium-sized (hetero)cycles. 1 Introduction 2 (3+m) (m > 3) Annulations Donor–Acceptor Cyclopropanes 2.1 (3+4) 2.2 (3+5) 3 (4+m) 2) Cyclobutanes 4 Conclusion

Язык: Английский

Процитировано

11