Synthesis of Cyclopropanes via Hydrogen-Borrowing Catalysis.
Synthesis of Cyclopropanes via Hydrogen-Borrowing Catalysis.
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DOI:
10.1021/acs.orglett.3c01768
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发表时间:
2023-07-21
期刊:
影响因子:
5.2
通讯作者:
Donohoe, Timothy J.
中科院分区:
文献类型:
--
作者:
Crompton, Jessica L.;Frost, James R.;Rowe, Sam M.;Christensen, Kirsten E.;Donohoe, Timothy J.
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.
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影响因子:
2.1
作者:
FURUKAWA, J;KAWABATA, N;NISHIMUR.J
通讯作者:
NISHIMUR.J
影响因子:
2
作者:
Honma, Masahiro;Takeda, Hiroyuki;Nakada, Masahisa
通讯作者:
Nakada, Masahisa
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
影响因子:
2.8
作者:
Eisch, JJ;Adeosun, AA;Gitua, JN
通讯作者:
Gitua, JN