New amino-, imino- and oxazolinophosphites based on 1,1′-bi-2-naphtol: coordination and catalytic properties

Imino‐ and Oxazolino‐Functionalised Pyrrolylphosphanes and Pyrrolylphosphinites: An Unexploited Class of Chiral P,N‐Bidentate Ligands with Unusual Electronic Properties

“…IR spectra were recorded with a Specord M80 instrument. 31 P and 13 C NMR spectra were recorded with a Bruker AMX 400 instrument (162.0 MHz for 31 P, 100.6 MHz for 13 C). The assignments of the signals in the 13 C NMR spectra were made with the use of the DEPT technique and, for pyrrolyl substituents, using literature data.…”

“…The syntheses of rhodium(i) complexes 3a-e and palladium(ii) complexes 4a-e were performed by techniques similar to that reported. [18,31] NaSO 2 pTol, CH 2 (CO 2 Me) 2 and N,O-bis(trimethylsilyl)acetamide (BSA) were purchased from Acros Organics. Compound 5 was syn-CHCl 3 ).…”

“…In particular, pyrrolylphosphane P(NC 4 H 4 ) 2 (7-aza-1-indolyl) is a much stronger π acceptor than P(Ph) 2 (7-aza-1-indolyl), but [20] Duplication of peaks in the 31 P NMR spectra of compounds 4a-d (Table 2) indicates the presence of their exo-and endo-isomers. [18,21] Sharp singlets in the 31 P NMR spectrum of 4e can be rationalised either by fast interconversion of the isomers or by an absence of one of them.…”

Enantioselective Pd-catalysed allylation with BINOL-derived monodentate phosphite and phosphoramidite ligands

“…Conversion of substrate 12 and optical yields of product 13 were determined via capillary GC (column GT-A, 30 m × 0.25 mm GT-A, trifluoroacetyl ␥-cyclodextrin) according to the literature [24]. Conversion of substrate 14 and optical yields of product 15 were determined by GC (Chiraldex B-DM column) as described previously [25].…”

Catalytic Hydrogenation of α‐Iminophosphonates as a Method for the Synthesis of Racemic and Optically Active α‐Aminophosphonates

“…[52,53] The chiral amidophosphite MonoPhos [54] was successfully applied in the Ir(I)-catalyzed hydrogenation of the model 2,3,3-trimethylindolenine. [55] Having in hand a family of ligands of phosphite (L2-6) [56][57][58] and amidophosphite (L7, 8) [59,60] types, we tested them in the hydrogenation of a-iminophosphonate 2b. The results obtained are presented in Table 3.…”