Synthesis of Cyclopropanes via Hydrogen-Borrowing Catalysis.

Synthesis of Cyclopropanes via Hydrogen-Borrowing Catalysis.
复制标题

DOI:
10.1021/acs.orglett.3c01768
复制
发表时间:
2023-07-21
期刊:
影响因子:
5.2
通讯作者:
Donohoe, Timothy J.
Donohoe, Timothy J.
中科院分区:
化学1区
文献类型:
--
作者:
Crompton, Jessica L.;Frost, James R.;Rowe, Sam M.;Christensen, Kirsten E.;Donohoe, Timothy J.

文献摘要

参考文献

相似文献

环丙烷是非常有用的基序,通常被纳入候选药物以提高效力、代谢稳定性或药代动力学性质。介绍了一种利用借氢催化进行酮类α-环丙烷化反应的简便方法。转化通过阻碍酮的HB烷基化发生,随后分子内的垂坠离去基位移产生环丙烷化产物。离去基可以安装在HB体系的酮或醇组分中,通过两种互补的途径获得α-环丙基酮。转化为相应的羧酸可以在简单的两步序列中实现,以提供合成上有用的1,1取代的螺环丙基酸构建块。
Cyclopropanes are highly useful motifs that are often incorporated into drug candidates to improve potency, metabolic stability, or pharmacokinetic properties. An expedient method for the α-cyclopropanation of ketones using hydrogen borrowing (HB) catalysis is described. The transformation occurs via HB alkylation of a hindered ketone with subsequent intramolecular displacement of a pendant leaving group affording the cyclopropanated product. The leaving group can be installed in either the ketone or alcohol component of the HB system, giving access to α-cyclopropyl ketones via two complementary approaches. Conversion to the corresponding carboxylic acids can be achieved in a simple two-step sequence to afford synthetically useful 1,1-substituted spirocyclopropyl acid building blocks.
DOI: 10.1016/0040-4020(68)89007-6
发表时间: 1968-01-01
期刊: TETRAHEDRON
影响因子: 2.1
作者:
FURUKAWA, J;KAWABATA, N;NISHIMUR.J
通讯作者: NISHIMUR.J
DOI: 10.1055/s-0029-1217363
发表时间: 2009-07-01
期刊: SYNLETT
影响因子: 2
作者:
Honma, Masahiro;Takeda, Hiroyuki;Nakada, Masahisa
通讯作者: Nakada, Masahisa
DOI: 10.1021/jacs.6b12840
发表时间: 2017-02-22
影响因子: 15
作者:
Akhtar, Wasim M.;Cheong, Choon Boon;Donohoe, Timothy J.
通讯作者: Donohoe, Timothy J.
DOI: 10.1039/c39770000587
发表时间: 1977-01-01
影响因子: --
作者:
CORY, RM;MCLAREN, FR
通讯作者: MCLAREN, FR
DOI: 10.1002/ejoc.200300588
发表时间: 2003-12-15
影响因子: 2.8
作者:
Eisch, JJ;Adeosun, AA;Gitua, JN
通讯作者: Gitua, JN