Results 41 to 50 of about 79 (63)
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ChemInform, 2011
AbstractThe regioselective reaction requires a stoichiometric amount of In to achieve high yields and diastereoselectivity and the ratio CH2Cl2/H2O plays a significant role.
Farhad Nowrouzi +2 more
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AbstractThe regioselective reaction requires a stoichiometric amount of In to achieve high yields and diastereoselectivity and the ratio CH2Cl2/H2O plays a significant role.
Farhad Nowrouzi +2 more
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ChemInform, 2016
AbstractAn environmentally friendly, regio‐ and chemoselective method for the preparation of the title alcohols by allylation of aldehydes with potassium allyltrifluoroborates in short times and moderate to high yields is developed.
Jadson F. Silva +5 more
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AbstractAn environmentally friendly, regio‐ and chemoselective method for the preparation of the title alcohols by allylation of aldehydes with potassium allyltrifluoroborates in short times and moderate to high yields is developed.
Jadson F. Silva +5 more
openaire +1 more source
Chemistry Letters, 2006
Abstract Cross-coupling reactions of [RCH=CHCH2BF3]K with aryl or 1-alkenyl bromides occurred at the γ-carbon of an allylborane moiety with perfect regioselectivities (>99%) in the presence of a palladium/D-t-BPF complex and K2CO3 in refluxing THF.
Yasunori Yamamoto +2 more
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Abstract Cross-coupling reactions of [RCH=CHCH2BF3]K with aryl or 1-alkenyl bromides occurred at the γ-carbon of an allylborane moiety with perfect regioselectivities (>99%) in the presence of a palladium/D-t-BPF complex and K2CO3 in refluxing THF.
Yasunori Yamamoto +2 more
openaire +1 more source
ChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Yasunori Yamamoto +2 more
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AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Yasunori Yamamoto +2 more
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Organometallics, 2008
Cross-coupling between bromoarenes and [(E)-CH3CH=CHCH2BF3]K (2a) by a catalyst prepared from Pd(OAc)2 and D-t-BPF selectively provided γ-coupling products via SE2′ substitution. Mechanistic study of transmetalation revealed a heretofore unknown process, namely, formation of a highly electrophilic [Pd(Ar)(D-t-BPF)]+ before transmetalation with 2a. Thus,
Yasunori Yamamoto +4 more
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Cross-coupling between bromoarenes and [(E)-CH3CH=CHCH2BF3]K (2a) by a catalyst prepared from Pd(OAc)2 and D-t-BPF selectively provided γ-coupling products via SE2′ substitution. Mechanistic study of transmetalation revealed a heretofore unknown process, namely, formation of a highly electrophilic [Pd(Ar)(D-t-BPF)]+ before transmetalation with 2a. Thus,
Yasunori Yamamoto +4 more
openaire +1 more source
Asian Journal of Organic Chemistry
AbstractThe poor nucleofugality of the amino group renders the C−N bond functionalization of primary aromatic amines highly challenging. Herein, we report a direct substitution reaction of 2‐aminotropones, bearing a unique non‐benzenoid seven‐membered aromatic ring that exists in some natural products and bioactive molecules, with potassium ...
Qian‐Qian Wu +3 more
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AbstractThe poor nucleofugality of the amino group renders the C−N bond functionalization of primary aromatic amines highly challenging. Herein, we report a direct substitution reaction of 2‐aminotropones, bearing a unique non‐benzenoid seven‐membered aromatic ring that exists in some natural products and bioactive molecules, with potassium ...
Qian‐Qian Wu +3 more
openaire +1 more source
Addition of Potassium Allyltrifluoroborates to Aldehydes and Ketones
2005B. Schilling, D. E. Kaufmann
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