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Acyl phosphines (R2P–C(O)R) are the tertiary phosphorus compounds having a P–C(O) linkages. Though they are known historically, their literature is not exhaustive mainly due to the vulnerability of P–C(O) bonds toward nucleophilic substitution reactions. However, there is a renewed interest in the synthesis of acyl phosphines and di (acyl) phosphines, recently. Among the methods available for the synthesis, most involve nucleophilic substitutions at carbonyl carbon by phosphorus nucleophile as a customary step. The examples of phosphines possessing two acyl groups (R(O)C–RP–C(O)R) are found more frequently in the literature of late, and most of them are cyclic in nature. The transition‐metal complexes of acyl phosphines and di (acyl) phosphines are moderately explored in literature. However, their catalytic applications are meager. In the current review, the details of syntheses, reactivity, structural features, and catalytic activities of acyl phosphines and bis (acyl) phosphines reported in the last three decades are discussed. [ABSTRACT FROM AUTHOR]

The study reports the fabrication of a free-standing reactive macroinitiator thin film via simple layer-by-layer assembly and dissolution of the sacrificial layer. The resulting macro­initiator thin film can be postfunctionalized by grafting polymer brush from it. Since the thin film is free from any substrate, bifacial functionalization can be done on the free-standing film. This approach is expected to significantly increase the functionality of free-standing polymer brush for most applications like catalysis and sensor because of the increase in functional group density per area. [ABSTRACT FROM AUTHOR]

An abstract of the article "Acyl Radicals from Aromatic Carboxylic Acids by Means of Visible-Light Photoredox Catalysis" by Bergonzini G and colleagues is presented.

The Rh-catalyzed formal carbenoid insertion into an amide C-N bond delivers azabicyclo[X.Y.Z.]alkane derivatives in good to high yields and proceeds via the formation of Rh-associated N-ylides, followed by an acyl group-selective Stevens [1,2]-shift through a concerted addition/elimination process on the sp2-hybridized carbon. [ABSTRACT FROM AUTHOR]

A palladium complex derived from Pd2(dba)3 and tris(2,4,6-trimethoxyphenyl)phosphine catalyzes the addition reaction of thioesters to norbornenes, giving the trans-2-acyl -3-organothionorbornanes predominantly with the acyl group at the endo-position and the organothio group at the exo-position. [ABSTRACT FROM AUTHOR]

Acyl groups with sterically hindered aryl residues (e.g. o-tolyl, mesityl or 1-naphthyl) as well as alkenyl or alkyl residues do not react. [ABSTRACT FROM AUTHOR]

This new approach represents an attractive alternative to the classical Pictet-Spengler reaction. [ABSTRACT FROM AUTHOR]