Traceless OH-Directed Wacker Oxidation-Elimination, an Alternative to Wittig Olefination/Aldol Condensation: One-Pot Synthesis of <i>α</i>,<i>β</i>-Unsaturated and Nonconjugated Ketones from Homoallyl Alcohols
作者:Venkati Bethi、Rodney A. Fernandes
DOI:10.1021/acs.joc.6b01899
日期:2016.9.16
A new method for one-pot synthesis of β-substituted and β,β-disubstituted α,β-unsaturated methyl ketones from homoallyl alcohols by sequential PdCl2/CrO3-promoted Wacker process followed by an acid-mediated dehydration reaction has been developed. Remarkably, internal homoallyl alcohols delivered regioselectively nonconjugated unsaturated carbonyl compounds under the same protocol. A new starting material-based
ZnCl<sub>2</sub>: Simple and Efficient Catalyst for the Allylation of Aldehydes With Allyltributylstannane
作者:K. Surendra、N. Srilakshmi Krishnaveni、R. Sridhar、B. Srinivas、V. Pavan Kumar、Y. V. D. Nageswar、K. Rama Rao
DOI:10.1080/00397910500328092
日期:2006.2
Abstract A simple and efficient procedure for the allylation of aldehydes with allyltributylstannane promoted by zinc chloride under mild conditions to give the corresponding homoallylic alcohols is reported in excellent yields. IICT Communication No. 050702.
A novel and highly efficient allylation of aldehydes using allyltributyltin has been developed in aqueous medium catalyzed by β-cyclodextrin in the presence of HCl without any metal catalysts to afford the corresponding homoallylic alcohols in good yields. The β-cyclodextrin can be recovered and reused for a number of runs without significant loss of activity.
Synthesis of Aromatic Retinoids and Curcuminoids and Evaluation of their Antiproliferative, Antiradical, and Anti-inflammatory Activities
作者:Jacek W. Morzycki、Lucie Rárová、Jiři Grúz、Tomasz Sawczuk、Urszula Kiełczewska、Leszek Siergiejczyk、Agnieszka Wojtkielewicz
DOI:10.1002/open.201600027
日期:2016.8
work, a convenient synthesis of aromatic retinoids and curcuminoids from vinyl or allyl ketones, and the corresponding alcohols, using olefin metathesis as a key reaction, was elaborated. The best yields and diastereoselectivities were obtained from allylic or homoallylic alcohols by employing the two‐step cross‐metathesis/oxidation procedure. The synthesized analogues were tested for their antiproliferative
Nickel-catalyzed arylative substitution of homoallylic alcohols
作者:Hai N. Tran、Chau M. Nguyen、Mason T. Koeritz、Dustin D. Youmans、Levi M. Stanley
DOI:10.1039/d2sc01716d
日期:——
Direct coupling of unactivated alcohols remains a challenge in synthetic chemistry. Current approaches to cross-coupling of alcohol-derived electrophiles often involve activated alcohols such as tosylates or carbonates. We report the direct arylative substitution of homoallylic alcohols catalyzed by a nickel-bisphosphine complex as a facile method to generate allylic arenes. These reactions proceed