Rhodium-catalyzed Dehydroborylation of Styrenes with Naphthalene-1,8-diaminatoborane [(dan)BH]: New Synthesis of Masked β-Borylstyrenes as New Phenylene–Vinylene Cross-coupling Modules
Synthesis of B-Protected β-Styrylboronic Acids via Iridium-Catalyzed Hydroboration of Alkynes with 1,8-Naphthalenediaminatoborane Leading to Iterative Synthesis of Oligo(phenylenevinylene)s
作者:Noriyuki Iwadate、Michinori Suginome
DOI:10.1021/ol9003096
日期:2009.5.7
group. The masked alkenylboronic acids thus obtained from alkynes bearing halo-substituted aryl groups served as new coupling modules in an iterative Suzuki−Miyaura cross-couplingreaction for the synthesis of oligo(phenylenevinylene)s.
Rhodium-catalyzed Dehydroborylation of Styrenes with Naphthalene-1,8-diaminatoborane [(dan)BH]: New Synthesis of Masked β-Borylstyrenes as New Phenylene–Vinylene Cross-coupling Modules
作者:Noriyuki Iwadate、Michinori Suginome
DOI:10.1246/cl.2010.558
日期:2010.6.5
Styrene derivatives underwent dehydroborylation with naphthalene-1,8-diaminatoborane [(dan)BH] in the presence of a cationic rhodium complex, giving β-borylstyrene derivatives in good yields. Thus prepared β-borylstyrenes bearing a chlorine or B(pin) group on their aromatic rings were utilized for the synthesis of highly conjugated molecules through stepwise cross-coupling, taking advantage of the dan group as an effective protective group for a boronyl group.