72232-59-8Relevant articles and documents
Donor Rhodium Carbenes by Retro-Buchner Reaction
Mato, Mauro,Echavarren, Antonio M.
supporting information, p. 2088 - 2092 (2019/01/25)
Rhodium carbenes are key intermediates in a range of cycloadditions and insertion reactions. Herein, we report the first generation of donor RhII carbenes by decarbenation of 7-substituted 1,3,5-cycloheptatrienes. This discovery unlocks an improved retro-Buchner-cyclopropanation sequence, a Si?H insertion reaction for a broad-scope synthesis of allylsilanes, and a new method for the vinylogation of aldehydes. The last strategy led to the development of an iterative synthesis of E-polyenes, and to the total synthesis of navenones B and C.
A new route to trienals using 2-substituted 2H-pyran-based Wittig reagents
Hemming,Taylor
, p. 1409 - 1410 (2007/10/02)
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CHEMISTRY OF ENOL ETHERS. LVI. CONDENSATION OF THE ACETALS OF AROMATIC ALDEHYDES WITH 1-ETHOXY-1,3-BUTADIENE. SYNTHESIS OF ARYLPOLYENE ALDEHYDES
Makin, S. M.,Shavrygina, O. A.,Dobretsova, E. K.,Ermakova, G. A.,Dymshakova, G. M.
, p. 651 - 656 (2007/10/02)
The condensation of a series of acetals of aromatic aldehydes (benzaldehyde, 4-methoxy and 3,4-dimethoxybenzaldehyde) with 1-ethoxy-1,3-butadiene was investigated.Successful realization of the reaction requires the presence of electron-donating goups in t