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Boron-Catalyzed, Diastereo- and Enantioselective Allylation of Ketones with Allenes
被引:9
|作者:
Nicholson, Kieran
[1
]
Peng, Yuxuan
[1
]
Llopis, Natalia
[1
]
Willcox, Dominic R.
[1
]
Nichol, Gary S.
[1
]
Langer, Thomas
[2
]
Baeza, Alejandro
[3
,4
]
Thomas, Stephen P.
[1
]
机构:
[1] Univ Edinburgh, EaStCHEM Sch Chem, Edinburgh EH9 3FJ, Scotland
[2] AstraZeneca, Pharmaceut Technol & Dev Chem Dev UK, Macclesfield SK10 2NA, England
[3] Univ Alicante, Inst Sintesis Organ, Alicante 03080, Spain
[4] Univ Alicante, Dept Quim Organ, Alicante 03080, Spain
基金:
英国工程与自然科学研究理事会;
关键词:
Allylation;
Boron;
Catalysis;
Transborylation;
Ketone;
ASYMMETRIC ALLYLBORATION;
CARBONYL-COMPOUNDS;
ALDEHYDES;
HYDROBORATION;
ORGANOBORANES;
DERIVATIVES;
ACTIVATION;
REDUCTION;
MECHANISM;
ALCOHOLS;
D O I:
10.1021/acscatal.2c03158
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
The diastereo-and enantioselective allylation of ketones remains a synthetic challenge, with transition metal catalysis offering the most applied methods. Here, a boron-catalyzed allylation of ketones with allenes is presented. Excellent yield, regioselectivity, and diastereoselectivity were found across function-alized substrates. The reaction was further developed to accommodate an enantioenriched boron catalyst and thus gave asymmetric ketone allylation in good yield, diastereoselectivity, and enantioselectivity. Mechanistic studies supported a hydroboration- allylation-transborylation pathway.
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页码:10887 / 10893
页数:7
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