Simple and one-pot synthesis of tri and tetracyclic frameworks containing [1,8]naphthyridin-2-one moiety from the Baylis–Hillman adducts
作者:Deevi Basavaiah、Kanumuri Ramesh Reddy
DOI:10.1016/j.tet.2009.12.033
日期:2010.2
A facile synthesis of tri and tetracyclic frameworks containing [1,8]naphthyridin-2-one skeleton from the Baylis–Hillman alcohols via the Johnson–Claisen rearrangement, followed by the treatment with Fe/AcOH in simple one-pot multi-step process is described.
Reductive-Cyclization-Mediated Synthesis of Fused Polycyclic Quinolines from Baylis-Hillman Adducts of Acrylonitrile: Scope and Limitations
作者:Virender Singh、Samiran Hutait、Sanjay Batra
DOI:10.1002/ejoc.200900336
日期:2009.7
The synthesis of a variety of polycyclicquinolines is described. The target molecules were obtained in two steps by an initial reductive cyclization followed by another intramolecular cyclization in the allylamines afforded from either the acetates or allyl bromides of Baylis–Hillmanadducts of 2-nitrobenzaldehydes and acrylonitrile. The two steps proceeded in one-pot for those substrates in which
An alternate approach to quinoline architecture via Baylis–Hillman chemistry: SnCl2-mediated tandem reaction toward synthesis of 4-(substituted vinyl)-quinolines
作者:Sudharshan Madapa、Virender Singh、Sanjay Batra
DOI:10.1016/j.tet.2006.06.098
日期:2006.9
acetyl derivatives of the Baylis–Hillman adducts obtained from 2-nitrobenzaldehydes and the carbonyl group containing carbon nucleophiles is described. Treatment of these compounds with SnCl2, triggers a tandem reaction wherein reduction of the nitro group is followed by a remarkably regioselective intramolecularcyclization and subsequent dehydrogenation to afford 4-(substituted vinyl)-quinolines.
描述了从2-硝基苯甲醛获得的Baylis-Hillman加合物的乙酰基衍生物与含羰基的碳亲核试剂之间的S N 2亲核取代反应产物中稠密取代的喹啉的另一种方法。用SnCl 2处理这些化合物触发串联反应,其中硝基的还原,随后是区域选择性的分子内环化反应,然后脱氢,得到4-(取代的乙烯基)-喹啉。
Iodine‐Mediated One‐Pot Synthesis of 1,4,5‐Substituted Pyrazoles from MBH Acetates via Allyl Hydrazone Intermediate
作者:Dipak J. Dahatonde、Aritra Ghosh、Adilakshmi Vutla、Sanjay Batra
DOI:10.1002/ejoc.202300355
日期:2023.7.21
A one-pot regioselectivesynthesis of 1,4,5-pyrazoles through a iodine-mediated reaction between Morita-Baylis-Hillman acetates and hydrazines via intermediacy of allyl hydrazone is described.