19672-37-8Relevant articles and documents
Catalytic tandem C-C bond formation/cleavage of cyclopropene for allylzincation of aldehydes or aldimine using organozinc reagents
Nakano, Takeo,Endo, Kohei,Ukaji, Yutaka
supporting information, p. 1418 - 1421 (2014/04/03)
The tandem allylation of aldehydes or an aldimine with allylzinc intermediates derived from organozinc reagents and cyclopropenes is described. The present three-component reaction involves carbozincation of cyclopropene and sequential cleavage of a cyclopropylzinc intermediate in situ without a transition-metal catalyst. The allylzinc intermediates generated in situ, which is an α,β-unsaturated acylanion equivalent, gave the corresponding homoallylic alcohols or amine in good yields.
Yb(OTf)3-promoted effective benzylation and allylation with N-tosyl amino group as a stable leaving group
Liu, Jinqian,Wang, Limin,Zheng, Xingzhou,Wang, Aili,Zhu, Mengyun,Yu, Jianjun,Shen, Qiang
supporting information; experimental part, p. 1843 - 1846 (2012/04/23)
A simple, inexpensive, environmentally friendly, and highly efficient benzylation and allylation of 1,3-dicarbonyl compounds with sulfonamides in the presence of Yb(OTf)3 is described. Yb(OTf)3 was proved to be a good catalyst for the cleavage of sp3 carbon-nitrogen bond. Various 1,3-dicarbonyl compounds can couple with a broad range of tosyl-activated benzylic and allylic amines to give diversely functionalized products in good to excellent yields.
Direct benzylation and allylic alkylation in high-temperature water without added catalysts
Hirashita, Tsunehisa,Kuwahara, Sho,Okochi, Sota,Tsuji, Makoto,Araki, Shuki
scheme or table, p. 1847 - 1851 (2010/09/07)
In high-temperature water a series of benzyl and allylic alcohols reacted with 1,3-dicarbonyl compounds and activated aromatic compounds to give the alkylated products without added catalysts.
