The intramolecular Baylis–Hillman reaction: easy preparation of versatile substrates, facile reactions, and synthetic applications
作者:Jung Eun Yeo、Xiuling Yang、Hee Jin Kim、Sangho Koo
DOI:10.1039/b311951c
日期:——
We have developed a general and highly efficient method for the preparation of diverse [small omega]-formyl-[small alpha],[small beta]-unsaturated carbonyl compounds and optimized the conditions for the intramolecular Baylis-Hillman reactions of these compounds to provide various biologically important polycyclic compounds.
Some unusual reactions of molecular oxygen with bicyclic diazenes which typically serve as precursors to alkylidenecyclopenane-1,3-diyls; peroxide formation
作者:R. Daniel Little、Lorraine Losiski-Dang、Manuel G. Venegas、Craig Merlic
DOI:10.1016/s0040-4039(00)85938-9
日期:1983.1
The reaction of a series of substituted bicyclic diazenes with oxygen was investigated. Three types of products result, namely ketoalcohols 2b-f, ketoaldehydes 4e-g and dioxolanes 3e-g. The potential intermediacy of an endoperoxide 5f is considered.
Asymmetric hydroboration with new chiral monoalkylboranes bearing a non-stereogenic, chirotopic center
作者:Claus-Dieter Graf、Paul Knochel
DOI:10.1016/s0040-4020(99)00445-7
日期:1999.7
c acids bearing a non-stereogenic, chirotopic center were prepared via stereoselective coppercatalyzed carbon-carbon bond forming reactions. These compounds serve as intermediates in the synthesis of new chiral monoalkylboranes which lead to enantio-selectivities of up to 64% ee in the asymmetrichydroboration of cyclic olefins.
La reaction de Wittig-Horner en milieu heterogene IX. Bis aldolisation des phosphonates a partir des dialdehydes aliphatiques en milieu aqueux peu basique. Synthese de cyclenols fonctionnels.
作者:M. Graff、A. Al Dilaimi、P. Seguineau、M. Rambaud、J. Villieras
DOI:10.1016/s0040-4039(00)84318-x
日期:1986.1
Aqueous solutions of glutaraldehyde and succinaldehyde give respectively improved yields of 1-functional 6-cyclohexenols and 5-cyclopentenols, when subjected to WITTIG-HORNER reaction in water at room temperature, with potassium carbonate as a base.
Intramolecular Morita–Baylis–Hillman adducts via sequential MBH and ring-closing-metathesis reactions
作者:Marie E. Krafft、Eun-Ho Song、Ryan J. Davoile
DOI:10.1016/j.tetlet.2005.07.066
日期:2005.9
Using a tandem Morita-Baylis-Hiliman (MBH) and ring-closing-metathesis (RCM) sequence, an alternative high yielding method for the construction of intramolecular Morita-Baylis-Hillman (IMBH) mono- and bicyclic functionalized cycloalkenols is reported. (c) 2005 Elsevier Ltd. All rights reserved.