On the stereochemical course of palladium-catalyzed cross-coupling of allylic silanolate salts with aromatic bromides.
On the stereochemical course of palladium-catalyzed cross-coupling of allylic silanolate salts with aromatic bromides.
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DOI:
10.1021/ja910804u
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发表时间:
2010-03-17
影响因子:
15
通讯作者:
Werner NS
中科院分区:
文献类型:
--
作者:
Denmark SE;Werner NS
The stereochemical course of palladium-catalyzed cross-coupling reactions of an enantioenriched, α-substituted, allylic silanolate salt with aromatic bromides has been investigated. The allylic silanolate salt was prepared in high geometrical (Z/E, 94:6) and high enantiomeric (94:6 er) purity by a copper-catalyzed SN2’ reaction of a resolved allylic carbamate. Eight different aromatic bromides underwent cross-coupling with excellent constitutional site selectivity (γ) and with excellent stereospecificity. Stereochemical correlation established that the transmetalation event proceeds through a syn SE’ mechanism which is interpreted in terms of an intramolecular delivery of the arylpalladium electrophile through a key intermediate that contains a discrete Si–O–Pd linkage.
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影响因子:
2.1
作者:
Denmark SE;Baird JD
通讯作者:
Baird JD
影响因子:
15
作者:
Denmark, Scott E.;Werner, Nathan S.
通讯作者:
Werner, Nathan S.
影响因子:
1.8
作者:
HATANAKA, Y;GODA, K;HIYAMA, T
通讯作者:
HIYAMA, T
影响因子:
15
作者:
Denmark, SE;Sweis, RF
通讯作者:
Sweis, RF
影响因子:
3.2
作者:
Fairlamb, Ian J. S.
通讯作者:
Fairlamb, Ian J. S.