Electroreductive Carbofunctionalization of Alkenes with Alkyl Bromides via a Radical-Polar Crossover Mechanism
作者:Wen Zhang、Song Lin
DOI:10.1021/jacs.0c08532
日期:2020.12.9
variety of alkene functionalization reactions, most of which proceed via an anodic oxidation pathway. In this report, we further expand the scope of electrochemistry to the reductive functionalization of alkenes. In particular, the strategic choice of reagents and reaction conditions enabled a radical-polar crossover pathway wherein two distinct electrophiles can be added across an alkene in a highly
We provide an account of synthetic strategies aimed at the efficient preparation of 4-amino-4-methyltetrahydro-2H-thiopyran 1,1-dioxide (3), an important cyclic sulfone buildingblock for medicinal chemistry. A practical and scalable protocol has been developed that readily gives access to the title compound from commercially available and inexpensive starting materials. In addition, this novel approach
Formation of allylated quaternary carbon centers <i>via</i> C–O/C–O bond fragmentation of oxalates and allyl carbonates
作者:Haifeng Chen、Yang Ye、Weiqi Tong、Jianhui Fang、Hegui Gong
DOI:10.1039/c9cc07072a
日期:——
emphasizes Fe-promoted cross-electrophile allylation of tertiaryalkyl oxalates with allyl carbonates that generates all C(sp3)-quaternary centers. The reaction involves fragmentation of tertiaryalkyl oxalate C-O bonds to give tertiaryalkyl radical intermediates, addition of the radicals to less hindered alkene terminals, and subsequent cleavage of the allyl C-O bonds. Allylation with 2-aryl substituted
THIOPYRAN DERIVATIVE, POLYMER, RESIST COMPOSITION, AND METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE USING SUCH RESIST COMPOSITION
申请人:Nozaki Koji
公开号:US20100227275A1
公开(公告)日:2010-09-09
To provide a thiopyran derivative, having a structure expressed by the following general formula 1:
where X is O or S; R
1
is —H, —CH
3
, C2-4 alkyl group, thioether group, or ketone group; R
2
is —H, —CH
3
, or trifluoromethyl group; and R
1
and R
2
may be identical to or different from each other.