Enantioselective Synthesis of Tertiary β-Boryl Amides by Conjunctive Cross-Coupling of Alkenyl Boronates and Carbamoyl Chlorides.
Enantioselective Synthesis of Tertiary β-Boryl Amides by Conjunctive Cross-Coupling of Alkenyl Boronates and Carbamoyl Chlorides.
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DOI:
10.1002/anie.202116784
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发表时间:
2022-04-04
期刊:
影响因子:
--
通讯作者:
Morken JP
中科院分区:
文献类型:
--
作者:
Wilhelmsen CA;Zhang X;Myhill JA;Morken JP
Synthesis of versatile β tert-boryl amides is accomplished by conjunctive cross coupling of α-substituted alkenyl boron “ate” complexes and carbamoyl chloride electrophiles. This reaction can be accomplished in an enantioselective fashion using a palladium catalyst in combination with MandyPhos. The addition of water results in enhanced chemoselectivity for the conjunctive coupling product relative to the Suzuki-Miyaura cross-coupling product. Transformations of the reaction products were examined as well as application to the synthesis of (+)-adalinine. Versatile tertiary β-boryl amides are prepared by conjunctive cross coupling of α-substituted alkenyl boron “ate” complexes and carbamoyl chloride electrophiles. This reaction gives morpholine amides, which are easily converted to an array of useful building blocks.
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