Chemistry is traditionally divided into organic and inorganic chemistry. The former is the study of compounds containing at least one carbon-hydrogen bonds. 104-67-6, Name is Undecanoic gamma-Lactone, molecular formula is C11H20O2, belongs to tetrahydrofurans compound, is a common compound. In a patnet, author is Grobelny, Zbigniew, once mentioned the new application about 104-67-6, Application In Synthesis of Undecanoic gamma-Lactone.
New way of anionic ring-opening copolymerization of beta-butyrolactone and epsilon-caprolactone: determination of the reaction course
Poly(epsilon -caprolactone)-block-poly(beta -butyrolactone) copolymers were prepared in two-step synthesis. Firstly, poly(epsilon -caprolactone) (PCL) was obtained by anionic ring-opening polymerization of CL initiated with anhydrous KOH activated 12-crown-4 cation complexing agent. Reaction was carried out in tetrahydrofuran solution and argon atmosphere at room temperature. Then, beta -butyrolactone (BL) and 18-crown-6 were added to the system, resulting in PCL-block-PBL copolymer, which contains after methylation hydroxyl starting group and methyl ester end group. The main product was contaminated with PCL and PBL homopolymers formed in a side reactions. C-13 NMR technique was used for determination of chemical structure of polymers obtained. The course of the studied processes was proposed. MALDI-TOF technique was used to reveal the macromolecules’ architecture where several series were found. The identified series shown that mainly copolymeric macromolecules were formed with scare contribution of homopolymeric polybutyrolactone with trans-crotonate starting groups and polycaprolactone, which is congruent with the proposed reaction mechanism. Moreover, critical approach concerning previously reported PCL-block-PBL copolymer synthesis by use of NaH as initiator was also presented.
We¡¯ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, 104-67-6. The above is the message from the blog manager. Application In Synthesis of Undecanoic gamma-Lactone.
Reference:
Tetrahydrofuran – Wikipedia,
,Tetrahydrofuran | (CH2)3CH2O – PubChem