A Boron-Boron Double Transborylation Strategy for the Synthesis of gem-Diborylalkanes was written by Docherty, Jamie H.;Nicholson, Kieran;Dominey, Andrew P.;Thomas, Stephen P.. And the article was included in ACS Catalysis in 2020.COA of Formula: C13H12O2 The following contents are mentioned in the article:
1,1-Diborylalkanes RCH2CH(Bpin)2 were prepared by double borylation of α-alkynes catalyzed by 9-borabicyclononane via transborylation pathway. Olefin hydroboration reactions provide efficient access to synthetically versatile and easily handled organoboronic esters. In this study, we demonstrate that the com. available organoborane reagent 9-borabicyclo[3.3.1]nonane (H-B-9-BBN) can serve as a catalyst for the sequential double hydroboration of alkynes using pinacolborane (HBpin). This strategy, which is effective for a wide range of terminal alkynes, is predicated upon a key C(sp3)-B/B-H transborylation reaction. Transition-state thermodn. parameters and 10-boron-isotopic labeling experiments are indicative of a σ-bond metathesis exchange pathway. This study involved multiple reactions and reactants, such as 4-Benzyloxyphenol (cas: 103-16-2COA of Formula: C13H12O2).
4-Benzyloxyphenol (cas: 103-16-2) belongs to ethers. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. COA of Formula: C13H12O2
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem