Results 31 to 40 of about 1,369,819 (304)

An NBO-TS predictive approach for torquoselectivity of ring opening in 3-substituted cyclobutenes [PDF]

, 2017
The torquoselectivity, the inward or outward ring opening of 3-substituted cyclobutenes, is conventionally guided by the donor and/or acceptor ability of the substituent (S).
Dasari L V K, Prasad, Arpita, Yadav, Veejendra, Yadav   +2 more
core   +1 more source

Functionalized Polyesters via Stereoselective Electrochemical Ring-Opening Polymerization of O-Carboxyanhydrides [PDF]

, 2020
Ring-opening polymerization is used to prepare polyesters with precisely controlled molecular weights, molecular weight distributions, and tacticities.
jia, chen, quanyou, feng, xiaoqian, wang, wenjun, cai, Yongliang, Zhong, Rong, Tong   +5 more
core   +2 more sources

Photoinitiated Cationic Ring-Opening Polymerization of Octamethylcyclotetrasiloxane

Molecules, 2023
Photochemical techniques have recently been revitalized as they can readily be adapted to different polymerization modes to yield a wide range of complex macromolecular structures.
Zehra Gul Coban, Huseyin Cem Kiliclar, Yusuf Yagci   +2 more
doaj   +1 more source

Ring-Opening Vibrations of Spherosiloxanes

, 2016
The ring-opening vibrations of the spherosilasesquioxanes of the general formula (HSiO3/2)2n, n = 2, 3, 4, etc., are normal modes in which all Si−O stretching and/or O−Si−O bending displacements of the considered ring are in phase.
Gion Calzaferri (1708585), Peter Bornhauser (3052419)   +1 more
core   +1 more source

Ring-Opening Carbonyl-Olefin Metathesis of Cyclobutenes

, 2022
The ring-opening carbonyl-olefin metathesis of cyclobutenes to furnish γ,δ-unsaturated aldehydesformal Claisen rearrangement productsis reported. The bistrifluoroacetic acid salt of 2,3-diazabicyclo[2.2.2]­octane promotes these reactions efficiently with
Maxwell G. Holl, Tristan H. Lambert, Maxwell G. Holl (12369569), Tristan H. Lambert (1328682)   +3 more
core   +1 more source

Ewing Sarcoma in Infants and Children Under 2 Years of Age: A French Retrospective Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Ewing sarcoma, the second most common primary bone cancer in children, requires intensive treatment that may lead to significant long‐term sequelae, particularly in infants. We retrospectively analyzed data from 1621 French patients treated between 1988 and 2015 within the EW88/93/97 or EE99 trials, focusing on 17 infants diagnosed before 24 ...
Elodie Verdier, Nathalie Cozic, Marie‐Dominique Tabone, Gaelle Pierron, Perrine Marec‐Berard, Sarah Winter, Gabriel Revon‐Rivière, Cyril Lervat, Dominique Plantaz, Marie‐Pierre Castex, Gregory Guimard, Estelle Thebaud, Stephanie Proust, Laure Saumet, Natacha Entz‐Werle, Sophie Taque, Cécile Vérité, Marta Jimenez, Nathalie Gaspar   +18 more
wiley   +1 more source

Controlled molecular architectures via ring opening metathesis polymerisation [PDF]

, 1995
This thesis describes studies into the ring opening metathesis polymerisation (ROMP) of some monocyclic alkenes, the living polymerisation of cyclopentene and the preparation of novel block copolymers and novel polyethylene architectures using having ...
Dounis, Panagiotis
core  

Provider and Parent Perspectives on Prioritizing the “Asking and Monitoring” Pediatric Cancer Psychosocial Standards of Care

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background The Standards for Psychosocial Care for Children with Cancer and Their Families (“Standards”) are evidence‐based guidelines for psychosocial care in pediatric oncology. Care related to the three “Asking and Monitoring” Standards—Assessment of Psychosocial Needs, Assessment of Financial Needs, and Monitoring Neurocognitive Problems ...
Julia B. Tager, Natalie Koskela‐Staples, Emily M. Pariseau, Michele Scialla, Kimberly Buff, Lori Wiener, Victoria Sardi Brown, Anne E. Kazak, Kimberly S. Canter   +8 more
wiley   +1 more source

Lewis Acid-Initiated Ring-Opening Reactions of Five- and Six-Membered Cyclic Ethers Based on the Oxonium Ylide Intermediates

Organics
In light of the small ring strain of five/six-membered cyclic ethers, constructing complex molecules via ring-opening reactions has consistently been a highly challenging topic in organic synthesis.
Dandan Jiang, Jun Xiao, Yingzhen Zhang, Kunming Liu, Juanhua Li, Jinbiao Liu   +5 more
doaj   +1 more source

The Reaction of Ethyl 2-oxo-2H-chromene-3-carboxylate with Hydrazine Hydrate

Molecules, 2013
Although salicylaldehyde azine (3) was reported in 1985 as the single product of the reaction of ethyl 2-oxo-2H-chromene-3-carboxylate (1) with hydrazine hydrate, we identified another main reaction product, besides 3, which was identified as malono ...
Amer M. Alanazi, Mohamed I. Attia, Tilal Elsaman, Hatem A. Abdel-Aziz   +3 more
doaj   +1 more source