108606-85-5Relevant articles and documents
2-Azaallyl Anion Initiated Ring-Opening Polymerization of N-Sulfonyl Aziridines: One-Pot Synthesis of Primary Amine-Ended Telechelic Polyaziridines
Wang, Ying,Yang, Ruhan,Luo, Wenyi,Li, Zhunxuan,Zhang, Zhen,Wu, Chuande,Hadjichristidis, Nikos
, (2019)
Using the easily accessible 2-azaallyl anions as initiators, the one-pot synthesis of well-defined primary amine-ended telechelic polyaziridines (α-NH2 PAzs) has been achieved through the ring-opening polymerization (ROP) of N-sulfonyl aziridines followed by hydrolysis of the diphenylketimine moiety (- N=C - Ph2). The 2-azaallyl anions were synthesized from the reaction of diphenylketimine or N-[aryl-methylene]-α-phenylbenzenemethanamine with potassium bis(trimethylsilyl) amide (KHMDS) in situ and used to initiate the ROP of aziridines leading to well-defined α-(Ph2C=N)-α′-aryl-ω-NH PAzs. Along with the diphenylketimine group (- N=C - Ph2), aryl functionalities, such as pyridine and triphenylphosphine moieties, can also be incorporated to the chain end. Chain extension has been applied for the synthesis of poly(N-sulfonyl aziridine)-block-poly(?-caprolactone) (PAz-b-PCL) block copolymers by utilization of the primary amine end group as initiating sites for the ROP of ?-caprolactone catalyzed by tin 2-ethyl hexanoate (SnOct2). Taking advantage of this synthetic approach, core cross-linked multiarm star (CCS) polymers with an outermost shell having amino and triphenylphosphine functionalities have been synthesized via "arm-first" strategy.
Double Diastereoselective Approach to Chiral syn- and anti-1,3-Diol Analogues through Consecutive Catalytic Asymmetric Borylations
Pujol, Alba,Whiting, Andrew
, p. 7265 - 7279 (2017/07/26)
Homoallylic boronate carboxylate esters derived from unsaturated aldehydes via an imination, β-borylation, imine hydrolysis, and Wittig trapping sequence, were subjected to a second boryl addition to give 1,3-diborylated carboxylate esters. Control of the
Total synthesis of fluoxetine and duloxetine through an in situ imine formation/borylation/transimination and reduction approach
Calow, Adam D. J.,Fernandez, Elena,Whiting, Andrew
, p. 6121 - 6127 (2014/08/05)
We report efficient, catalytic, asymmetric total syntheses of both (R)-fluoxetine and (S)-duloxetine from α,β-unsaturated aldehydes conducting five sequential one-pot steps (imine formation/copper mediated β-borylation/transimination/reduction/oxidation) followed by the specific ether group formation which deliver the desired products (R)-fluoxetine in 45% yield (96% ee) and (S)-duloxetine in 47% yield (94% ee). This journal is the Partner Organisations 2014.