a In summary, we report a novel approach for the transition metal-free conjugate reduction of α,β-unsaturated ketones to afford saturated ketones in good yields with tosylhydrazine as a hydrogen equivalent. This protocol does not require the use of hydrogen gas and is efficient being applicable...
a However, the correspondingly ring closure product 2H-chromene 4 was not detected. Interestingly, the 1,4 conjugate reduction product dihydrochalcone 2a was obtained in 78% yield. With the encouraging initial result, herein, we will describe a novel approach for transition metal-free conjugate redu...
6) transition-metal cluster 过渡金属团簇 例句>> 补充资料:裸金属原子簇 分子式:CAS号:性质:不含任何配体的金属原子簇。有裸金属原子簇阴离子和阳离子。形成这类原子簇的金属大都是过渡元素后的P区金属,如14族(ⅣA)锗(Ge)、锡(Sn)、铅(Pb)。15族(VA)、锑(Sb)、铋(Bi)。它们分别形成等。这些阴离子...
aIn summary, we report a novel approach for the transition metal-free conjugate reduction of α,β-unsaturated ketones to afford saturated ketones in good yields with tosylhydrazine as a hydrogen equivalent. This protocol does not require the use of hydrogen gas and is efficient being applicable ...