A method for producing compounds of the formula:
Wherein R2 is selected from the group consisting of amino, lower alkylamino, di-lower alkylamino, allylamino, diallylamino, N-lower alkyl-N-allylamino, benzylamino, dibenzylamino, phenethylamino, diphenethylamino, 4-hydroxyphenethylamino or di-(4-hydroxyphenethylamino);
comprising:
a) reacting
with Wittig Reagent to produce
wherein R1 is alkoxyl;
f) hydrolyzing compound II under acidic conditions to produce
g) subjecting compound III to reduction and amination to produce the tertiary amine
wherein R2 is as defined above;
h) reacting compound IV with
4-chlorophenoxyacetonitrile to create nucleophilic substitution to produce the nitrile compound
wherein R2 is as defined above; and
i) effecting reduction and hydrolysis in the same step with palladium/C and sodium hydroxide to produce
wherein R2 is as defined above.
domino Michael/ Henryreaction of 1-acetylindolin-3-ones with o-formyl-(E)-β-nitrostyrenes catalyzed by low loading of a quinine-derived amine-squaramide provides the corresponding indolin-3-one derivatives bearing four adjacent stereogenic centers in good to high yields and with excellent stereoselectivities. A highly diastereo- and enantioselective domino Michael/ Henryreaction of 1-acetylindolin-3-ones
摘要 1-乙酰吲哚啉-3-酮与邻甲酰基-( E )-β-硝基苯乙烯在低负载奎宁衍生的胺-方酰胺催化下的高度非对映和对映选择性多米诺迈克尔/亨利反应提供相应的吲哚啉-3-一种具有四个相邻立体中心的衍生物,产率好到高,并具有出色的立体选择性。 1-乙酰吲哚啉-3-酮与邻甲酰基-( E )-β-硝基苯乙烯在低负载奎宁衍生的胺-方酰胺催化下的高度非对映和对映选择性多米诺迈克尔/亨利反应提供相应的吲哚啉-3-一种具有四个相邻立体中心的衍生物,产率好到高,并具有出色的立体选择性。
Asymmetric Organocatalytic Michael/Henry Domino Reactions through Hydrogen-Bond Activation: Kinetic Access to Indane Scaffolds Bearing<i>cis</i>-Vicinal Substituents
作者:Charles C. J. Loh、Iuliana Atodiresei、Dieter Enders
DOI:10.1002/chem.201302131
日期:2013.8.12
cis! A bifunctional hydrogen‐bond‐catalyzed Michael/Henry dominoreaction allows preferential asymmetric access to the kinetic cis‐nitroindanol products with excellent enantioselectivity through a postulated matched transition state (see scheme; H‐Bo = hydrogen bond activation). This high yielding protocol opens up a new strategy to access highly useful enantio‐enriched cis‐aminoindanol‐containing
Synthesis of indanes via carbene-catalyzed single-electron-transfer processes and cascade reactions
作者:Yuhuang Wang、Xingxing Wu、Yonggui Robin Chi
DOI:10.1039/c7cc07208b
日期:——
carbene-catalyzed cascade reaction is developed for the synthesis of multi-substituted indane derivatives. The reaction involves two sequential Michael-addition steps, of which the first step is enabled by an NHC-mediated radical process. This work demonstrates the synthetic potentials of NHC-mediated single-electron-transfer processes for efficient reactions and rapid synthesis.