Chemoselective oxidation of organozinc reagents with oxygen
作者:Ingo Klement、Henning Lütjens、Paul Knochel
DOI:10.1016/s0040-4020(97)00603-0
日期:1997.7
Functionalized organozinc compounds prepared by hydrozincation, carbozincation or by boron-zincexchange can be directly oxidized in a selective manner to the corresponding functionalized alcohols or hydroperoxides depending on the reaction conditions.
Multi-Metal-Catalyzed Oxidative Radical Alkynylation with Terminal Alkynes: A New Strategy for C(sp<sup>3</sup>)–C(sp) Bond Formation
作者:Shan Tang、Yichang Liu、Xinlong Gao、Pan Wang、Pengfei Huang、Aiwen Lei
DOI:10.1021/jacs.8b02745
日期:2018.5.9
for C(sp3)-C(sp) cross-coupling with terminalalkynes has been developed by using a multi-metal-catalyzed reaction strategy. Alkyl radicals generated from different approaches are able to couple with terminalalkynes by judicious selection of the catalyst combination. This reaction protocol offers an efficient alternative approach for the synthesis of substituted alkynes from terminalalkynes besides
Oxidation of zinc organometallics prepared by hydrozincation or carbozincation using oxygen
作者:Ingo Klement、Henning Lütjens、Paul Knochel
DOI:10.1016/0040-4039(95)00501-3
日期:1995.5
Organozinc compounds prepared by the hydrozincation or carbozincation of functionalized unsaturated molecules can be directly oxidized by oxygen affording alcohols after reductive workup in satisfactory yields.
Allyltitaniumtriphenoxide was found to be an excellent reagent for regioselective allylation at the moresubstitutedcarbonatom of oxiranes.
发现烯丙基三氧化二铝是在氧杂环丁烷的更多取代的碳原子上区域选择性烯丙基化的极佳试剂。
Process for Preparing organic compounds
申请人:Herold Peter
公开号:US20090105503A1
公开(公告)日:2009-04-23
Process for preparing a compound of the formula (I) in which R
1
and R
2
are each independently H, C
1
-C
8
-alkyl, halogen, polyhalo-C
1
-C
8
-alkoxy, polyhalo-C
1
-C
8
-alkyl, C
1
-C
8
-alkoxy, C
1
-C
8
-alkoxy-C
1
-C
8
-alkyl, or C
1
-C
8
-alkoxy-C
1
-C
8
-alkoxy, where R
1
and R
2
are not both H, and R
3
is C
1
-C
8
-alkyl, which is characterized in that a) a compound of the formula (II) in which R
1
and R
2
are each as defined above and X is Br, I, triflate, toyslate or mesylate is reacted with prop-2-yn-1-ol to give the compound of the formula (III), b) the compound of the formula (III) is reacted with an alkyl-metal compound in which “alkyl” is as defined above for R
3
to give a compound of the formula (I).