Sulfonic acid anchored on silica, SiO
<sub>2</sub>
@SO
<sub>3</sub>
H: A superior solid acid catalyst for quick and solvent‐free reductive‐deoxygenation of ketones with NaBH
<sub>3</sub>
CN
作者:Behzad Zeynizadeh、Mehri Kouhkan
DOI:10.1002/jccs.201800250
日期:2018.12
functional groups in the absence of acidic media (pH ~ 3–4). In this study, the immobilized sulfonic acid on silica, SiO2@SO3H, was prepared and applied as a new solid acid catalyst for extremely enhancing the reducing ability of NaBH3CN. The influence of SiO2@SO3H was highlighted by performing the quick and green reduction of structurally diverse carbonyl compounds involving aldehydes, ketones, α,β‐unsaturated
NaBH 3 CN作为一种改性的氢硼酸盐试剂,由于强吸收性CN基团,在没有酸性介质(pH约3-4)的情况下,对还原官能团没有任何还原能力。在本研究中,制备了固定在二氧化硅上的磺酸SiO 2 @SO 3 H,并将其用作新型固体酸催化剂,以极大地增强NaBH 3 CN的还原能力。SiO 2 @SO 3 H的影响通过将结构多样的羰基化合物(包括醛,酮,α,β-不饱和的烯和烯酮,α-二酮和酰基醇)快速而绿色地还原为相应的醇或烷烃而得到了强调。 NaBH 3 CN。由NaBH 3在CN / SiO 2 @SO 3 H体系中,醛被还原为相应的醇,酮类化合物还原为烷烃,成为还原性脱氧产物。所有还原反应均在室温和无溶剂条件下于3分钟内进行,以提供高至优异收率的产品(90-98%)。