Results 261 to 270 of about 591,901 (383)

Accreditation of vascular laboratories

open access: bronze, 1990
Richard F. Kempczinski   +3 more
openalex   +1 more source

A Longitudinal Study of Counselor Trainees’ Cognitive Complexity

open access: yesCounselor Education and Supervision, EarlyView.
ABSTRACT We conducted a quantitative longitudinal examination of the cognitive development of 186 counselors‐in‐training (CITs) across their training programs. Findings indicate a general developmental trajectory, with most change occurring between completion of practicum and end of program.
Darcy Haag Granello   +1 more
wiley   +1 more source

Pivotal Synthesis of Tetrasubstituted Epoxides from Ketones and α‐Halo B/Si Ylides with Understanding of the Activation Modes

open access: yesChemistryEurope, EarlyView.
The preparation of diastereoselective 1,1,2,2‐tetrasubstituted borosilylepoxides is described, involving the epoxidation of ketones with α‐monohalo borylsilylmethane reagents. The nature of the ambiphilic reagent suppressed the Boron‐Wittig olefination.
Luis Tarifa   +8 more
wiley   +1 more source

Copper‐Catalyzed Defluorinative Allylboration of Allenes with Trifluoromethyl Alkenes

open access: yesChemistryEurope, EarlyView.
A copper‐catalyzed borylative coupling of allenes with 1‐trifluoromethyl alkenes is reported. The reaction selectively provides synthetically versatile borylated 1,1‐difluoro‐1,5‐dienes that can be converted into a range of medicinally relevant fluorinated compounds. Mechanistic studies reveal a key role of the catalytically generated LiCl by assisting
Martín Piñeiro‐Suárez   +3 more
wiley   +1 more source

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