group assisted C–H activation with maleimides leading to novel and switchable decarboxylative Heck-type and [4 + 1] annulation products catalyzed by Rh(III) has been reported. In these reactions, solvents play a vital role in switching the selectivity. An aprotic solvent, THF, leads to the decarboxylative Heck-type product while the protic solvent, TFE, results in the [4 + 1] annulation product. The
There are disclosed a composition comprising
(E)-1,4-dibromo-2-methyl-2-butene and
(Z)-1,4-dibromo-2-methyl-2-butene, wherein the ratio of the E isomer to the total amount of the E and Z isomers is 0.9 or more; a process for producing the same and a process using the same to produce an allyl halide compound of formula (1):
1
wherein X denotes a bromine atom,
Y denotes an ArS(O)
2
group or an RCOO group,
wherein Ar denotes an aryl group which may be substituted and R denotes a hydrogen atom, a lower alkyl group or an aryl group which may be substituted, and
the wavy line means that the derivative is a mixture of an E or Z geometrical isomer.
The present disclosure provides processes for the preparation of a compound of formula:
which is useful as an antiviral agent. The disclosure also provides compounds that are synthetic intermediates.
[EN] PROCESSES FOR PREPARING ANTIVIRAL COMPOUNDS<br/>[FR] PROCÉDÉS DE PRÉPARATION DE COMPOSÉS ANTIVIRAUX
申请人:GILEAD PHARMASSET LLC
公开号:WO2015191437A1
公开(公告)日:2015-12-17
The present disclosure provides processes for the preparation of a compound of formula: which is useful as an antiviral agent. The disclosure also provides compounds that are synthetic intermediates.
本披露提供了一种制备式为的化合物的过程:它可用作抗病毒剂。该披露还提供了合成中间体化合物。
Processes for preparing antiviral compounds
申请人:Gilead Pharmasset LLC
公开号:US10584109B2
公开(公告)日:2020-03-10
The present disclosure provides processes for the preparation of a compound of formula:
which is useful as an antiviral agent. The disclosure also provides compounds that are synthetic intermediates.