Synthesis of highly functional carbamates through ring-opening of cyclic carbonates with unprotected α-amino acids in water
作者:Peter Olsén、Michael Oschmann、Eric V. Johnston、Björn Åkermark
DOI:10.1039/c7gc02862h
日期:——
it possible to suppress the degree of hydrolysis in relation to aminolysis. This enabled the synthesis of functionally dense carbamates containing alkenes, carboxylic acids, alcohols and thiols after short reaction times at room temperature. When Glycine was used as the nucleophile in the ring-opening with four different five membered cyclic carbonates, containing a plethora of functional groups, the
Synthesis of <i>N</i>-[(2-hydroxyethoxy)carbonyl]glycine from carbon dioxide, ethylene oxide, and α-amino acid by ionic gelation of sodium tripolyphosphate (TPP) and spirulina supported on magnetic KCC-1 in aqueous solution
study, a novel ionic gelation (IG) of sodium tripolyphosphate (TPP) and spirulina was prepared that, supported on magnetic fibrous silica nanospheres (Fe3O4/KCC-1/IG), has been developed for the synthesis of N-[(2-hydroxyethoxy)carbonyl]glycine from carbon dioxide, ethylene oxide, and α-amino acid. This morphology ultimately leads to higher catalyticactivity for the KCC-1-supported ionic gelation. The
在这项研究中,制备了一种新的三聚磷酸钠(TPP)和螺旋藻的离子凝胶(IG),并在磁性纤维二氧化硅纳米球(Fe 3 O 4 / KCC-1 / IG)上负载了该化合物,用于合成N -[[(2-羟基乙氧基)羰基]甘氨酸,来自二氧化碳,环氧乙烷和α-氨基酸。这种形态最终导致对KCC-1负载的离子胶凝反应具有更高的催化活性。通过使用TEM,FESEM,VSM,FT-IR,TGA和BET对Fe 3 O 4 / KCC-1 / IG MNP进行了全面表征。我们支持在二氧化硅表面进行离子凝胶化,并使用螺旋藻和TPP作为催化剂。这些观察结果被用于直接和选择性化学固定CO 2的过程中提供高度的CO 2捕获和转化。
Cyclic allylic carbonates as a renewable platform for protecting chemistry in water
作者:Peter Olsén、Jennifer Morvan、Supaporn Sawadjoon、Andrey Shatskiy、Eric V. Johnston、Björn Åkermark
DOI:10.1039/c8gc01622d
日期:——
All in water – functional cyclic carbonates as a versatile and renewable protection/deprotection platform.