Microwave-Assisted Suzuki Cross-Coupling Reaction, a Key Step in the Synthesis of Polycyclic Aromatic Hydrocarbons and Their Metabolites
作者:Arun K. Sharma、Krishnegowda Gowdahalli、Jacek Krzeminski、Shantu Amin
DOI:10.1021/jo701665j
日期:2007.11.1
A highly efficient and general method for Suzuki cross-couplingreaction en route to the synthesis of polycyclic aromatic hydrocarbons (PAHs) and their metabolites has been developed. Microwave irradiation of aryl bromides 1 and boronic acids (2 and 3) using polyurea microencapsulated palladium catalyst (Pd EnCat 30) gave the coupling adducts 4 and 5 in excellent yields in just 20 min compared to ∼24
A New and Concise Synthesis of 3-Hydroxybenzo[<i>c</i>]phenanthrene and 12-Hydroxybenzo[<i>g</i>]chrysene, Useful Intermediates for the Synthesis of Fjord-Region Diol Epoxides of Benzo[<i>c</i>]phenanthrene and Benzo[<i>g</i>]chrysene
作者:Subodh Kumar
DOI:10.1021/jo9712355
日期:1997.11.1
the hydroxy analogues 5 and 6, respectively. The availability of this short and high-yielding regiospecific method for the synthesis of phenols 5 and 6 should allow the preparative-scale synthesis of the fjord-region diol epoxides 3 and 4. These diol epoxides are required as starting compounds for the synthesis of site-specifically modified oligonucleotides which are critically needed to elucidate the
Synthesis of Dibenzo[<i>def,p</i>]chrysene, Its Active Metabolites, and Their <sup>13</sup><i>C</i>-Labeled Analogues
作者:Daiwang Xu、Yazhen Duan、Ian A. Blair、Trevor M. Penning、Ronald G. Harvey
DOI:10.1021/ol7029323
日期:2008.3.1
Dibenzo[def,p]chrysene (DBC) is a highly carcinogenic polycyclic aromatic hydrocarbon suspected to be involved in initiation of lung cancer in smokers. Efficient new syntheses of DBC, its activemetabolites [DBC diol (1), DBC dione (2), DBC diolepoxide (3)], and their previously unknown 13C2-labeled analogues are reported. The 13C2-labeled analogues are required as standards for sensitive methods