Synthesis, structure, and properties of 1,3-oxazacycloalkanes (review)

Ecofriendly Fast Batch Synthesis of Dioxolanes, Dithiolanes, and Oxathiolanes without Solvent under Microwave Irradiation

“…Under these conditions, we got the various protected carbonyls 3, together with 10% methanol, which was further removed by distillation to give pure 3a-f (see Table 1). [7][8][9][10][11][12][13][14] In fact, the 2-mol scale was easier than the 10-mmol scale, owing to the possibility of continuous distillation under irradiation in the Synthewave 1000 with a packed column, which is not possible in the smaller Synthewave 402. It is noteworthy that the conditions (time, temperature) were exactly the same going from the 10-mmol scale to the 2-mol scale.…”

“…Under these conditions, we got the various protected carbonyls 3 , together with 10% methanol, which was further removed by distillation to give pure 3a − f (see Table ). − …”

Investigation of Color Instability in a Liquid Laundry Detergent

“…From Fig. 3 Purported reaction mechanism for the formation of yellowcolored conjugated imines from TEA, developed from the work of Longuet et al [5], Yano et al [6], Bergmann et al [12], and Rakhmankulov et al [13] Identification of Yellow-Colored Reaction Products It was also observed that addition of iron(III) to the acetaldehyde-doped detergent caused the rate of offcolor formation to increase.…”

“…The purported chemical pathway for formation of colored compounds from TEA is presented in Fig. 3 [5,6,12,13]. The initial reaction mechanism (Fig.…”

“…However, on the basis of the purported reaction mechanisms presented in Fig. 3, one possible chemical structure for C 27 H 31 NO 2 is a PEI containing an N-hydroxyethyl substituent plus an additional oxygen such as hydroxyl, carbonyl, or ether group in the molecule (13) as shown in Fig. 7.…”