529409-31-2Relevant academic research and scientific papers
Gold-Catalyzed Enantioselective Intramolecular Annulation of Ene-Yne-Carbonyls via Benzopyrylium-Type Intermediates
Koshikawa, Takumi,Satoh, Masakazu,Masutomi, Koji,Shibata, Yu,Tanaka, Ken
, p. 1488 - 1492 (2019)
It has been established that a cationic gold(I)/(R)-H8-binap complex catalyzes the enantioselective intramolecular [4+2] annulation of benzene-linked ene-yne-carbonyls via benzopyrylium-type intermediates at room temperature to give chiral tric
Unprecedented nucleophile-promoted 1,7-S or Se shift reactions under Pummerer reaction conditions of 4-alkenyl-3-sulfinylmethylpyrroles
Go, Takashi,Morimatsu, Akane,Wasada, Hiroaki,Tanabe, Genzoh,Muraoka, Osamu,Sawada, Yoshiharu,Yoshimatsu, Mitsuhiro
, p. 2722 - 2729 (2018/11/21)
A unique 1,7-S- and Se-shift reaction under Pummerer reaction conditions of 4-alkenyl-3-sulfinyl- and seleninylpyrroles was described. The usual Pummerer reaction of 4-(alkenylaminomethyl)-3-phenylsulfinylpyrroles and a successive reaction with tetrabutyl
High-valent palladium-promoted formal Wagner-Meerwein rearrangement
Wu, Hongmiao,Yang, Bin,Zhu, Lin,Lu, Ronghua,Li, Guigen,Lu, Hongjian
supporting information, p. 5804 - 5807 (2016/11/29)
An oxy-palladation, formal Wagner-Meerwein rearrangement and fluorination cascade has been established for generating fluorinated oxazolidine-2,4-diones and oxazolidin-2-ones. The reaction has a broad substrate scope in which both aryl and alkyl groups can be utilized as efficient migrating groups. Experimental evidence suggests that the reaction is initiated by anti-oxy-palladation of the olefin, followed by oxidative generation of an alkyl PdIV intermediate and a concerted migration-fluorination.
Hf(IV)-catalyzed enantioselective epoxidation of N-alkenyl sulfonamides and N-tosyl imines
Olivares-Romero, Jose Luis,Li, Zhi,Yamamoto, Hisashi
supporting information; body text, p. 5440 - 5443 (2012/05/20)
Asymmetric epoxidation of allylic and homoallylic amine derivatives catalyzed by Hf(IV)-bishydroxamic acid complexes is described. Under similar conditions, aldimine and ketimine produced oxaziridines. The sulfonyl group is demonstrated to be an effective directing group for these transformations.
Au-catalyzed piperidine synthesis via tandem acyloxy migration/ intramolecular [3 + 2] cycloaddition of enynyl esters
Zheng, Huaiji,Huo, Xing,Zhao, Changgui,Jing, Peng,Yang, Juan,Fang, Bowen,She, Xuegong
supporting information; experimental part, p. 6448 - 6451 (2012/02/03)
An Au-catalyzed tandem protocol involving enynyl ester isomerization and subsequent intramolecular [3 + 2] cyclization has been developed. This strategy provides an efficient approach for the synthesis of polyfunctional piperidines, which are subunits of
N-silyl-tethered radical cyclizations: a new synthesis of gamma-amino alcohols.
Blaszykowski, Christophe,Dhimane, Anne-Lise,Fensterbank, Louis,Malacria, Max
, p. 1341 - 1344 (2007/10/03)
[reaction: see text] Various allylic and propargylic amines bearing a protecting group (PG) have been employed in N-silyl-tethered radical cyclizations. The resulting silapyrrolidine adducts could be smoothly oxidized, creating access to gamma-amino alcoh
