57681-53-5Relevant articles and documents
A facile synthesis of γ-butenolides via cyclization of 3-alkenoic acids with dimethyl sulfoxide and oxalyl bromide
Ding, Rui,Liu, Yongguo,Liu, Lei,Li, Huimin,Tao, Sichen,Sun, Baoguo,Tian, Hongyu
supporting information, p. 3001 - 3007 (2019/08/26)
The combination of dimethyl sulfoxide and oxalyl bromide was used to accomplish the cyclization of 3-alkenoic acids with the aid of a base to afford γ-butenolides, in which bromodimethylsulfonium salt generated in situ was proposed to serve as a Br+ source.
Lewis base-catalyzed electrophilic lactonization of selenyl bromide resin and facile solid-phase synthesis of furan-2(5H)-one derivatives
Jun He, Rong,Chun Zhu, Bing,Wang, Yu Guang
, p. 523 - 528 (2014/07/07)
A facile solid-phase synthesis approach was developed for the rapid synthesis of multi-substituted furan-2(5H)-one derivatives libraries. The synthetic strategy included the selenyl bromide resin-induced electrophilic lactonization catalyzed by Lewis base, lithiation, nucleophilic substitution and oxidation-elimination of the selenium resins. The advantages of the new method are good yields, high purity, straightforward operations and high diversity of the products, lack of odor, and good stability of the selenium resins. Copyright
Pd-catalyzed 5-endo-trig-type cyclization of β,γ-unsaturated carbonyl compounds: An efficient ring closing reaction to give γ-butenolides and 3-pyrrolin-2-ones
Bajracharya, Gan B.,Koranne, Priti S.,Nadaf, Rashid N.,Gabr, Randa Kassem Mohamed,Takenaka, Kazuhiro,Takizawa, Shinobu,Sasai, Hiroaki
supporting information; experimental part, p. 9064 - 9066 (2011/02/16)
The 5-endo-trig-type cyclization has been performed using a Pd-bis(isoxazoline) catalyst. The present cyclization of β,γ- unsaturated carbonyl compounds gave γ-butenolides and 3-pyrrolin-2-ones in good to excellent yields.
