Unified Access to Pyrimidines and Quinazolines Enabled by N-N Cleaving Carbon Atom Insertion.
Unified Access to Pyrimidines and Quinazolines Enabled by N-N Cleaving Carbon Atom Insertion.
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DOI:
10.1021/jacs.2c09616
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发表时间:
2022-10-26
影响因子:
15
通讯作者:
Levin, Mark D.
中科院分区:
文献类型:
--
作者:
Hyland, Ethan E.;Kelly, Patrick Q.;McKillop, Alexander M.;Dherange, Balu D.;Levin, Mark D.
Given the ubiquity of heterocycles in biologically active molecules, transformations with the capacity to modify such molecular skeletons with modularity remain highly desirable. Ring expansions that enable interconversion of privileged heterocyclic motifs are especially interesting in this regard. As such, the known mechanisms for ring expansion and contraction determine the classes of heterocycle amenable to skeletal editing. Herein, we report a reaction that selectively cleaves the N–N bond of pyrazole and indazole cores to afford pyrimidines and quinazolines, respectively. This chlorodiazirine-mediated reaction provides a unified route to a related pair of heterocycles that are otherwise typically prepared by divergent approaches. Mechanistic experiments and DFT calculations support a pathway involving pyrazolium ylide fragmentation followed by cyclization of the ring-opened diazahexatriene intermediate to yield the new diazine core. Beyond enabling access to valuable heteroarenes from easily prepared starting materials, we demonstrate the synthetic utility of skeletal editing in the synthesis of a Rosuvastatin analog as well as in an aryl vector-adjusting direct scaffold hop.
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影响因子:
15
作者:
Dherange BD;Kelly PQ;Liles JP;Sigman MS;Levin MD
通讯作者:
Levin MD
影响因子:
4.3
作者:
Kempf, B;Hampel, N;Mayr, H
通讯作者:
Mayr, H
影响因子:
7.3
作者:
Brow, Dean G.;Bostrom, Jonas
通讯作者:
Bostrom, Jonas
影响因子:
7.3
作者:
Drewry DH;Annor-Gyamfi JK;Wells CI;Pickett JE;Dederer V;Preuss F;Mathea S;Axtman AD
通讯作者:
Axtman AD
影响因子:
5.2
作者:
Jadhav, Santosh D.;Singh, Anand
通讯作者:
Singh, Anand