TY - JOUR
T1 - Aromatic boron wheels with more than one carbon atom in the center
T2 - C 2B8, C3B93+, and C 5B11+
AU - Erhardt, Stefan
AU - Frenking, Gernot
AU - Chen, Zhongfang
AU - Von Ragué Schleyer, Paul
PY - 2005/2/4
Y1 - 2005/2/4
N2 - A convergent synthesis of α-methylene amides exploits a hybrid radical/ionic concept in which radical carbonylation of alkynes is followed by ionic trapping of the resulting carbonyl-containing radical species with amines (see scheme). The reaction of substituted terminal alkynes with pressurized CO, Bu3SnH, and 2,2′-azobis-isobutyronitrile in the presence of a large excess of amines gave good yields of the corresponding α-methylene amides.
AB - A convergent synthesis of α-methylene amides exploits a hybrid radical/ionic concept in which radical carbonylation of alkynes is followed by ionic trapping of the resulting carbonyl-containing radical species with amines (see scheme). The reaction of substituted terminal alkynes with pressurized CO, Bu3SnH, and 2,2′-azobis-isobutyronitrile in the presence of a large excess of amines gave good yields of the corresponding α-methylene amides.
KW - Aromaticity
KW - Boron
KW - Carboranes
KW - Density functional calculations
UR - http://www.scopus.com/inward/record.url?scp=15444364283&partnerID=8YFLogxK
U2 - 10.1002/anie.200461970
DO - 10.1002/anie.200461970
M3 - 文章
AN - SCOPUS:15444364283
SN - 1433-7851
VL - 44
SP - 1078
EP - 1082
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 7
ER -