84682-15-5Relevant academic research and scientific papers
A convenient synthesis of α,α′- homo- and α,α′-hetero-bifunctionalized poly(ε-caprolactone)s by ring opening polymerization: The potentially valuable precursors for miktoarm star copolymers
Patil, Sachin S.,Tawade, Bhausaheb V.,Wadgaonkar, Prakash P.
, p. 844 - 860 (2016)
Two new ring opening polymerization (ROP) initiators, namely, (3-allyl-2-(allyloxy)phenyl)methanol and (3-allyl-2-(prop-2-yn-1-yloxy)phenyl)methanol each containing two reactive functionalities viz. allyl, allyloxy and allyl, propargyloxy, respectively, were synthesized from 3-allylsalicyaldehyde as a starting material. Well defined α-allyl, α′-allyloxy and α-allyl, α′-propargyloxy bifunctionalized poly(ε-caprolactone)s with molecular weights in the range 4200-9500 and 3600-10,900 g/mol and molecular weight distributions in the range 1.16-1.18 and 1.15-1.16, respectively, were synthesized by ROP of ε-caprolactone employing these initiators. The presence of α-allyl, α′-allyloxy and α-allyl, α′-propargyloxy functionalities on poly(ε-caprolactone)s was confirmed by FT-IR, 1H, 13C NMR spectroscopy, and MALDI-TOF analysis. The kinetic study of ROP of ε-caprolactone with both the initiators revealed the pseudo first order kinetics with respect to ε-caprolactone consumption and controlled behavior of polymerization reactions. The usefulness of α-allyl, α′-allyloxy functionalities on poly(ε-caprolactone) was demonstrated by performing the thiol-ene reaction with poly(ethylene glycol) thiol to obtain (mPEG)2-PCL miktoarm star copolymer. α-Allyl, α′-propargyloxy functionalities on poly(ε-caprolactone) were utilized in orthogonal reactions i.e copper catalyzed alkyne-azide click (CuAAC) with azido functionalized poly(N-isopropylacrylamide) followed by thiol-ene reaction with poly(ethylene glycol) thiol to synthesize PCL-PNIPAAm-mPEG miktoarm star terpolymer. The preliminary characterization of A2B and ABC miktoarm star copolymers was carried out by 1H NMR spectroscopy and gel permeation chromatography (GPC).
Synthesis of Chromenoisoxazolidines from Substituted Salicylic Nitrones via Visible-Light Photocatalysis
Haun, Graham,Paneque, Alyson N.,Almond, David W.,Austin, Brooke E.,Moura-Letts, Gustavo
supporting information, p. 1388 - 1392 (2019/03/08)
This effort reports the first redox-neutral visible-light photocatalytic intramolecular dipolar cycloaddition for the diastereoselective synthesis of chromenoisoxazolidines. The authors have found that alkenylphenyl nitrones with a diverse substitution pattern on the aromatic ring and the alkenyl substituent undergo visible-light-promoted cycloadditions in the presence of catalytic amounts of Ru(bpy)3Cl2 in high yields and selectivities. Evidence indicates that the proposed redox-neutral pathway is the predominant photoredox mechanism for this transformation.
A cascade Claisen rearrangement/o-quinone methide formation/electrocyclization approach to 2H-chromenes
Song, Liyan,Huang, Fang,Guo, Liwen,Ouyang, Ming-An,Tong, Rongbiao
supporting information, p. 6021 - 6024 (2017/07/10)
A new approach has been developed for the synthesis of 8-substituted 2H-chromenes, featuring a novel cascade aromatic Claisen rearrangement/o-quinone methide formation/6π-electrocyclization. This new method was demonstrated with 28 examples tolerating different substitutions at alkenes, allylic and aromatic ring and with total syntheses of three 2H-chromene natural products.
Synthesis of 1-indanonyl oxepanes
Chang, Meng-Yang,Lee, Nien-Chia
, p. 867 - 872 (2012/06/01)
A variety of 1-indanonyl oxepanes with the novel structure of indanonyl oxepanes was prepared from reaction of hydroxybenzaldehydes via a series of reasonable transformations, including the regioselective PhBClmediated allylation (or Claisen rearrangement), one-pot reaction of ring-closing metathesis and the Wittig olefination, hydrogenation, and the Friedel-Crafts intramolecular cyclization. Georg Thieme Verlag Stuttgart . New York.
COMPOSITIONS AND METHODS INCLUDING CELL DEATH INDUCERS AND PROCASPASE ACTIVATION
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Page/Page column 70, (2008/12/08)
Compositions and methods are disclosed in embodiments relating to induction of cell death such as in cancer cells. Compounds and related methods for synthesis and use thereof, including the use of compounds in therapy for the treatment of cancer and selective induction of apoptosis in cells are disclosed. Compounds are disclosed in connection with modification of procaspases such as procaspase-3. In embodiments, compositions are capable of activation of procaspase-3.
An isomerization-ring-closing metathesis strategy for the synthesis of substituted benzofurans
Van Otterlo, Willem A.L.,Morgans, Garreth L.,Madeley, Lee G.,Kuzvidza, Samuel,Moleele, Simon S.,Thornton, Natalie,De Koning, Charles B.
, p. 7746 - 7755 (2007/10/03)
Twelve substituted benzofurans were synthesized from their corresponding substituted 1-allyl-2-allyloxybenzenes using ruthenium-mediated C- and O-allyl isomerization followed by ring-closing metathesis.
