Direct Access to Monoprotected Homoallylic 1,2-Diols via Dual Chromium/Photoredox Catalysis
作者:Felix Schäfers、Linda Quach、J. Luca Schwarz、Mar Saladrigas、Constantin G. Daniliuc、Frank Glorius
DOI:10.1021/acscatal.0c03697
日期:2020.10.16
Herein, we present a dual catalytic strategy to efficiently obtain monoprotected homoallylic 1,2-diols by coupling abundant aldehydes with simple (silyl) enol ethers, thus providing direct access to this important motif without the (super) stoichiometric use of prefunctionalized metal-allyl species. The modularity of our approach is shown by the introduction of several silyl- and alkyl-based protecting
Copper catalysed preparation of vinyl ethers from unactivated vinylic halides
作者:Menno A. Keegstra
DOI:10.1016/s0040-4020(01)88528-8
日期:1992.3
Vinylic halides have been treated with sodium methoxide in the presence of 10 mol% of copper bromide. Most of the vinylic methyl ethers could thus be obtained in a good yield. The reaction proceeds with a 100% retention of configuration. The mechanism of the process is shortly discussed.
Isomerisation of allyl ethers to vinyl ethers catalysed by palladium on carbon
作者:Howard A. J. Carless、David J. Haywood
DOI:10.1039/c39800000980
日期:——
Several allyl ethers are cleanly converted into the corresponding prop-1-enyl ethers on heating in benzene or toluene in the presence of palladium on carbon.
在钯/碳存在下,在苯或甲苯中加热时,将几种烯丙基醚干净地转化为相应的1-丁烯基醚。
PROCESS FOR PRODUCING ETHER COMPOUND
申请人:Kyowa Yuka Co., Ltd.
公开号:EP1415968A1
公开(公告)日:2004-05-06
The present invention provides the following process for produci ng and the like, which enables the production of an ether compound, which is useful for chemical amplification type resist compositions, synthetic intermediates of pharmaceuticals, paints, or the like, with less side reaction and in high yield.
A process for producing an ether compound having a group represented by the general formula (II)
wherein R1, R2 and R3 may be the same or different, and represent substituted or unsubstituted alkyl, substituted or unsubstituted aryl or substituted or unsubstituted aralkyl, or R1 and R2 form cycloalkyl together with an adjacent carbon atom,
which comprises allowing a compound having a hydroxyl group (including a carboxyl group) to react with an alkenyl ether represented by the general formula (I)
wherein R1, R2 and R3 have the same significances as defined above, respectively.
The present invention provides the following process for producing and the like, which enables the production of an ether compound, which is useful for chemical amplification type resist compositions, synthetic intermediates of pharmaceuticals, paints, or the like, with less side reaction and in high yield.
A process for producing an ether compound having a group represented by the general formula (II)
wherein R
1
, R
2
and R
3
may be the same or different, and represent substituted or unsubstituted alkyl, substituted or unsubstituted aryl or substituted or unsubstituted aralkyl, or R
1
and R
2
form cycloalkyl together with an adjacent carbon atom,
which comprises allowing a compound having a hydroxyl group (including a carboxyl group) to react with an alkenyl ether represented by the general formula (I)
wherein R
1
, R
2
and R
3
have the same significances as defined above respectively.