Bovine serum albumin: An efficient and green biocatalyst for the one-pot four-component synthesis of pyrano[2,3-c]pyrazoles
作者:Xingtian Huang、Zhipeng Li、Dongyang Wang、Yiqun Li
DOI:10.1016/s1872-2067(15)61088-9
日期:2016.9
four-component reaction of aryl aldehydes, malononitrile, hydrazine hydrate, and ethyl acetoacetate for the synthesis of pyrano[2,3-c]pyrazoles under mild reaction conditions. The BSA biocatalyst also displayed a high catalytic affinity for acyclic/cyclic ketones to yield the corresponding pyrano[2,3-c]pyrazoles or their spirocyclic variants. The BSA could be used for at least five cycles without serious loss
生物催化剂的使用在化学催化领域引起了越来越多的关注。在这里,我们已经证明,牛血清白蛋白 (BSA) 是一种普遍存在的、廉价的、非酶促转运蛋白,可以在芳基醛、丙二腈、水合肼、和乙酰乙酸乙酯用于在温和的反应条件下合成吡喃并[2,3-c]吡唑。BSA 生物催化剂还显示出对无环/环状酮的高催化亲和力,以产生相应的吡并 [2,3-c] 吡唑或其螺环变体。BSA 可以使用至少五个循环而不会严重损失催化活性。这种新颖、高效的协议具有产量高、操作简单和相对温和的环境影响等优点。而且,