Recommanded Product: Benzyl Alcohol. Recently I am researching about MESO-LACTIDE; ORGANOCATALYSTS; POLYMERS; DEGRADATION; CHALLENGES, Saw an article supported by the National Key RD Plan [2017YFC1104800]; CAS Hundred Talents ProgramChinese Academy of Sciences [Y5100719AL]; Young Taishan Scholars Program of Shandong Province [tsqn201812112]; 135” Projects Fund of CAS-QIBEBT Director Innovation Foundation; DICP & QIBEBT United Foundation [UN201701]. Published in ROYAL SOC CHEMISTRY in CAMBRIDGE ,Authors: Lv, CD; Zhou, L; Yuan, RT; Mahmood, Q; Xu, GQ; Wang, QG. The CAS is 100-51-6. Through research, I have a further understanding and discovery of Benzyl Alcohol
A series of iminophosphorane-thiourea/urea bifunctional catalysts was synthesized and utilized for the isoselective ring-opening polymerization of rac-lactide. The ROPs were promoted efficiently, affording the polylactides with controlled molecular weight, narrow molecular weight distribution and well-defined end groups without undesired side reactions. The experiment data revealed that ROPs of rac-LA are a controlled/living process. The highest stereoselectivity (P-m) was up to 0.80 using rac-IPU-1 under mild reaction conditions. The mechanistic study indicated that stereoselective ROPs of rac-LA were mainly controlled by a chain-end control mechanism when using rac/(R,R)-IPTU-1/IPU-1 as catalysts. Additionally, the ee values of -11% at 0 degrees C and -17% at -40 degrees C were achieved at about 50% conversion using (S)-IPU-2 as a chiral catalyst. The selectivity factor (s = k(L)/k(D)) of 1.6 indicated that a clear kinetic resolution occurred and the enantiomorphic site control mechanism was involved.
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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles