Cyclic allylic carbonates as a renewable platform for protecting chemistry in water
作者:Peter Olsén、Jennifer Morvan、Supaporn Sawadjoon、Andrey Shatskiy、Eric V. Johnston、Björn Åkermark
DOI:10.1039/c8gc01622d
日期:——
All in water – functional cyclic carbonates as a versatile and renewable protection/deprotection platform.
水中的一切-功能性环状碳酸酯作为多功能和可再生的保护/去保护平台。
Palladium-catalyzed [3 + 2] cycloaddition reaction using 2-(sulfonylmethyl)- or 2-(cyanomethyl)allyl carbonate
作者:Isao Shimizu、Yukihiro Ohashi、Jiro Tsuji
DOI:10.1016/s0040-4039(01)81558-6
日期:1984.1
Reaction of ethyl 2-(sulfonylmethyl)- or 2-(cyanomethyl)allyl carbonate with α,β-unsaturated esters or ketones in the presence of PD2(dba)3·.CHCl3-dppe catalyst gave highly functionalized cyclopentanes regio-selectively in good yields.
Rhodium(III)‐Catalyzed Regioselective C−H Allylation and Prenylation of Indoles at C4‐Position
作者:Shang‐Shi Zhang、Yan‐Zhi Liu、Yi‐Chuan Zheng、Hui Xie、Shao‐Yong Chen、Jia‐Lin Song、Bing Shu
DOI:10.1002/adsc.202100882
日期:2022.1.4
Herein, Rh(III)-catalyzed C4-selective C−H allylation and prenylation of indoles by using a weak carbonyl coordination directing group have been reported. By employing 5-methylene-1,3-dioxan-2-ones, 4-vinyl-1,3-dioxolan-2-ones and 2-methyl-2,3-butadiene as scalable cross-coupling partners, these divergent synthesis protocols proceed smoothly under redox-neutral reaction conditions, delivering various
Guiding the nitrogen nucleophile to the middle: palladium-catalyzed decarboxylative cyclopropanation of 2-alkylidenetrimethylene carbonates with isocyanates
作者:Ryo Shintani、Kohei Moriya、Tamio Hayashi
DOI:10.1039/c0cc05308b
日期:——
A palladium-catalyzed decarboxylative cyclopropanation of 2-alkylidenetrimethylene carbonates with isocyanates is described to form oxazolidinones of (1-aminocyclopropyl)methanols with high selectivity. The site of nucleophilic attack is directed by connecting the two reaction components and by employing an electron-deficient triarylphosphine ligand.
Palladium-catalyzed coupling of allylic cyclic carbonates with iodobenzene and hypervalent iodonium salts
作者:Suk-Ku Kang、Kyung-Yun Jung、Chan-Hee Park、Su-Bum Jang
DOI:10.1016/0040-4039(95)01704-l
日期:1995.10
Palladium-catalyzed arylation of allylic cyclic carbonates with iodobenzene in the presence of Pd(OAc), as catalyst afforded the phenyl-substituted allylic alcohols via palladium oxygen β-elimination. However, palladium-catalyzed arylation, alkenylation, and alkynylation of allylic cyclic carbonates with iodonium tetrafluoroborates afforded the phenyl, alkenyl, and alkynyl-substituted allylic cyclic