A compound represented by the following General Formula (1):
where R
1
represents a protective group for a hydroxyl group or a hydrogen atom, and R
2
represents a methyl group or an ethyl group.
由以下一般式(1)表示的化合物:
其中R1代表羟基或氢原子的保护基团,R2代表甲基或乙基基团。
Modulation of photochemical oxidation of thioethers to sulfoxides or sulfones using an aromatic ketone as the photocatalyst
作者:Bin Zhao、Gerald B. Hammond、Bo Xu
DOI:10.1016/j.tetlet.2021.153376
日期:2021.10
We have developed an eco-friendly and chemo-selective photocatalytic synthesis of sulfoxides or sulfones via oxidation of sulfides (thioethers) at ambient temperature using air or O2 as the oxidant. An inexpensive thioxanthone was used as the photocatalyst. Our method offers excellent chemical yields and good functional group tolerance. The hydrogen bonding between hexafluoro-2-propanol (HFIP) and
我们开发了一种环保且化学选择性的光催化合成亚砜或砜,通过在环境温度下使用空气或 O 2作为氧化剂氧化硫化物(硫醚)。廉价的噻吨酮被用作光催化剂。我们的方法提供了出色的化学产率和良好的官能团耐受性。六氟-2-丙醇 (HFIP) 和亚砜之间的氢键可能在最大限度地减少亚砜的过度氧化方面发挥重要作用。
Direct Catalytic Asymmetric Mannich-Type Reaction of α-Sulfanyl Lactones
作者:Sho Takechi、Naoya Kumagai、Masakatsu Shibasaki
DOI:10.1021/ol4008734
日期:2013.6.7
CatalyticasymmetricMannich-typereactions of α-sulfanyl lactones to aldimines were promoted by a chiral Ag complex/DBU binary catalyst. The reaction proceeded in a syn-selective manner in high enantioselectivity. Alkylative activation of the sulfide of the Mannich adduct allowed for the formation of trisubstituted aziridines.
作者:Arthur F. Wagner、Edward Walton、Carl H. Hoffman、Louis H. Peterson、Frederick W Holly、Karl Folkers
DOI:10.1021/ja01624a056
日期:1955.10
Asymmetric sulfoxidation of a β-carbonyl sulfide series by chloroperoxidase
作者:Reinaldo R Vargas、Etelvino J.H Bechara、Liliana Marzorati、Blanka Wladislaw
DOI:10.1016/s0957-4166(99)00339-0
日期:1999.8
The chloroperoxidase (CPO)-catalyzed oxidation of a series of beta-carbonyl sulfides to sulfoxides has been studied at room temperature in aqueous citrate buffer. For dialkyl beta-carbonyl sulfides, the products with methyl and ethyl substituents are obtained in ca. 100% yield. However when the alkyl group is n-propyl or i-propyl the yield drops dramatically (25%). An aryl sulfide derivative afforded product in very low yield (4%), but when the phenyl group bears a carbonyl, and the sulfur substituents are methyl or ethyl, the oxidation occurs with high yields (91-95%). Steric control of the sulfoxidation reaction is also confirmed with cyclohexanone derivatives, where a low product yield is observed even at high enzyme concentrations. Noteworthy are the yields obtained with cyclopentanone sulfide (65%) and an unexpected quantitative yield obtained with the gamma-butyrolactone sulfide. (C) 1999 Elsevier Science Ltd. All rights reserved.