Reactions of ketene acetals, ketene thioacetals, and ketene aminals with ethyl benzoylazocarboxylate

Tandem Reactions of 2-Methylimidazoline and 1,2-Dimethylimidazoline with Various Benzoyl Chlorides

“…The electronic nature of the R group has no apparent impact on the product yield under these conditions ( Table 1, entries [6][7][8][9][10][11][12][13][14][15][16]. When the R group increases the electrophilicity of a benzoyl chloride, it simultaneously decreases the nucleophilicity of the diacyl ketene-N,N¢-acetal intermediate, and vice versa.…”

Condensation reactions of 1,1-dimorpholinoethene and of 1,1-dipiperidinoethene with carbon acids

“…The electronrich double bonds of 3 and 4 can participate in cycloaddition reactions of the 1,3-dipolar and Diels-Alder types (1 1, 12) and of the 2 + 2 type (7,13), some of which are succeeded by fragmentation reactions. A case of electron transfer from 3 to an electron-deficient substrate, ethyl benzoylazocarboxylate, has also been recorded (14). Not surprisingly, the reactivity of these 1,l-enediamines has at times led to complex reaction mixtures, with attendant difficulties in complete characterization of the reaction products and delineation of reaction pathways.…”

Reactions of ketenes. XX. Phenylketene dimethylacetal as synthon for the introduction of functionalized phenylethyl units

“…ate [3,4], thiobenzoylisocyanate [5], diphenylketene [6,7] nitrile oxides [8], phenylazide [9], ethyl azidoformate [lo-121, azocarboxylate esters [13-151, ethyl diazoacetate [ 11, to give linear or cyclic gem-dimethoxy compounds which owing to the structural features are intermediates in organic synthesis [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Therefore by use of this electronrich alkene several compound types were obtained, a functionalized phenylethyl unit being introduced in the skeleton of the molecule of the reactive.…”