One-Pot Nonisocyanate Synthesis of Sequence-Controlled Poly(hydroxy urethane)s from a Bis(six-membered cyclic carbonate) and Two Different Diamines was written by Ousaka, Naoki;Endo, Takeshi. And the article was included in Macromolecules (Washington, DC, United States) in 2021.Application In Synthesis of Diphenyl carbonate The following contents are mentioned in the article:
Sequence-controlled synthetic polymers have received increasing interest because of their great potential to develop next-generation functional materials. Here, we report a facile synthesis of a sym. spiro bis(six-membered cyclic carbonate), 2,4,8,10-tetraoxaspiro[5.5]undecane-3,9-dione (1), its reactivity, and a one-pot, nonisocyanate synthesis of sequence-controlled poly(hydroxy urethane)s (PHUs) from 1 with two different sym. diamines. The second-order rate constant for the ring-opening addition reaction of one of the two cyclic carbonates of 1 with 1-hexylamine is two orders of magnitude larger than that of the remaining one of the resulting intermediate due to a remarkable difference between their ring strain energies. This difference in the reactivity enables the selective formation of a diurethane-linked bis(six-membered cyclic carbonate) from the reaction of 1 with a diamine (0.5 equiv). The subsequent addition of a different diamine (0.5 equiv) to the same pot affords sequence-controlled PHUs with an ABAC sequence. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Application In Synthesis of Diphenyl carbonate).
Diphenyl carbonate (cas: 102-09-0) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Application In Synthesis of Diphenyl carbonate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics