Enantioselective Thioetherification of Olefins Guided by CuH Catalysis
CuH 催化下烯烃的对映选择性硫醚化
基本信息
- 批准号:10616488
- 负责人:
- 金额:$ 6.91万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2022
- 资助国家:美国
- 起止时间:2022-04-25 至 2025-04-24
- 项目状态:未结题
- 来源:
- 关键词:AcademiaAdoptedAlkenesArchitectureAreaBiological ModelsCatalysisChemicalsChemistryComplexCopperDevelopmentEducational process of instructingEnvironmentGoalsGreekIndustryInstitutionLaboratoriesLearningLigandsMedicineMentorsMethodsModelingNatural SourceOrganic ChemistryPatternPetroleumPharmacologic SubstancePreparationPrevalenceProceduresProcessReactionReagentResearchSchemeSilanesSiteSourceStyrenesSulfonesSulfoxideSulfurSurveysSystemTherapeuticThiazinesTrainingcareerdesignelectron densityforgingfunctional groupimprovedmethod developmentnovelnovel strategiesnucleophilic additionoxidationskillssulfenamidetargeted treatmentthioethertool
项目摘要
PROJECT SUMMARY/ABSTRACT
Olefins are abundant chemical feedstocks that many industries, including pharmaceutical development, rely
on to prepare essential synthons in a stereo- and regioselective manner. Similar to the ubiquity of olefins, sulfur-
containing molecules have been used in a medicinal context since antiquity, and continue to represent a large
portion of new FDA approvals. The ability of sulfur to adopt five stable oxidation states further contributes to the
structural diversity predicated on forming crucial C–S bonds. As such, the development of a chemo- and
enantioselective method to construct C–S bonds (i.e., thioethers) from olefins would serve as a useful synthetic
tool in the preparation of many pharmaceutically relevant targets.
While many methods exist to prepare thioethers, they classically rely on the nucleophilic addition of thiolates
to highly reactive species such as alkyl halides. This approach has poor chemo-selectivity, in that uncontrolled
nucleophilic addition can occur at many sites within complex architectures, and has stereoselectivity that is
predicated on first forming enantiopure alkyl halides. These two factors greatly limit the general utility of this
approach and often dictate the order in which bonds must be constructed in targeted synthesis. Over the last
decade, thiol-ene chemistry has emerged as a useful tool in constructing C–S bonds from olefins. However,
thiol-ene chemistry proceeds with restricted regioselectivity, in that it only allows anti-Markovnikov
functionalizations, and does not yield enantioenriched products.
The object of this proposal is to provide a new synthetic approach to synthesize enantioenriched thioethers
from widely available functionalized olefin precursors. Using copper(I) hydride catalysis in conjunction with a
sulfenamide-based sulfur transfer reagent will yield a versatile method to construct both enantioenriched and
linear thioethers. Furthermore, the prepared thioethers will serve as an entry point to other stereodefined sulfur-
containing functional groups such as sulfoxides and sulfones. This versatile method will be beneficially adopted
to the synthesis of many sulfur-containing pharmaceuticals, thereby demonstrating the overall utility of this
approach. The proposed research is expected to provide novel approaches to tackle long-standing challenges
in forging C–S bonds using CuH catalysis.
The Buchwald laboratory at MIT is the ideal environment to accomplish the proposed research and training
goals in preparation for a career in academia. In the Buchwald group, I will gain crucial training in many areas of
organic chemistry including method development and physical organic chemistry. Furthermore, MIT will provide
numerous opportunities to improve my skills as an educator and scientific mentor through the MIT Teaching and
Learning Laboratory. Collectively, all of these factors led me to choose MIT as the optimal institution to pursue
my ultimate goal of having a successful independent academic career.
项目总结/文摘
项目成果
期刊论文数量(0)
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Michael Strauss其他文献
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{{ truncateString('Michael Strauss', 18)}}的其他基金
Enantioselective Thioetherification of Olefins Guided by CuH Catalysis
CuH 催化下烯烃的对映选择性硫醚化
- 批准号:
10464729 - 财政年份:2022
- 资助金额:
$ 6.91万 - 项目类别:
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