TY  - JOUR
A1  - Hagspiel, Stephan
A1  - Arrowsmith, Merle
A1  - Fantuzzi, Felipe
A1  - Vargas, Alfredo
A1  - Rempel, Anna
A1  - Hermann, Alexander
A1  - Brückner, Tobias
A1  - Braunschweig, Holger
T1  - Highly colored boron-doped thiazolothiazoles from the reductive dimerization of boron isothiocyanates
JF  - Angewandte Chemie International Edition
N2  - Reduction of (CAAC)BBr\(_2\)(NCS) (CAAC=cyclic alkyl(amino)carbene) in the presence of a Lewis base L yields tricoordinate (CAAC)LB(NCS) borylenes which undergo reversible E/Z-isomerization. The same reduction in the absence of L yields deep blue, bis(CAAC)-stabilized, boron-doped, aromatic thiazolothiazoles resulting from the dimerization of dicoordinate (CAAC)B(NCS) borylene intermediates.
KW  - inorganic chemistry
KW  - aromaticity
KW  - reduction
KW  - fused thiazaboroles
KW  - DFT
KW  - borylenes
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-256432
VL  - 60
IS  - 12
ER  - 
TY  - JOUR
A1  - Hagspiel, Stephan
A1  - Fantuzzi, Felipe
A1  - Dewhurst, Rian D.
A1  - Gärtner, Annalena
A1  - Lindl, Felix
A1  - Lamprecht, Anna
A1  - Braunschweig, Holger
T1  - Addukte des Stammboraphosphaketens H\(_{2}\)BPCO und deren Insertionsreaktionen mittels Decarbonylierung
JF  - Angewandte Chemie
N2  - Die ersten Beispiele für Lewis-Basen-Addukte des Stammboraphosphaketens H\(_{2}\)B-PCO und ihre cyclischen Dimere wurden hergestellt. Eines dieser Addukte zeigt unter milden Bedingungen eine Decarbonylierung und anschließende Insertion des Phosphinidens in die B-C-Bindung eines Borols, was in der Bildung sehr seltener Beispiele für 1,2-Phosphaborinine, B,P-Isostere von Benzol, resultiert. Die starken Donoreigenschaften dieser 1,2-Phosphaborinine wurden durch die Synthese ihrer π-Komplexe mit Metallen der Gruppe 6 bestätigt.
KW  - Bor
KW  - Decarbonylierung
KW  - Heterocyclen
KW  - Ketene
KW  - Phosphor
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-244803
VL  - 133
IS  - 24
SP  - 13780
EP  - 13784
ER  - 
TY  - JOUR
A1  - Hagspiel, Stephan
A1  - Fantuzzi, Felipe
A1  - Dewhurst, Rian D.
A1  - Gärtner, Annalena
A1  - Lindl, Felix
A1  - Lamprecht, Anna
A1  - Braunschweig, Holger
T1  - Adducts of the parent boraphosphaketene H\(_2\)BPCO and their decarbonylative insertion chemistry
JF  - Angewandte Chemie International Edition
N2  - The first examples of Lewis base adducts of the parent boraphosphaketene (H\(_2\)B-PCO) and their cyclodimers are prepared. One of these adducts is shown to undergo mild decarbonylation and phosphinidene insertion into a B−C bond of a borole, forming very rare examples of 1,2-phosphaborinines, B/P isosteres of benzene. The strong donor properties of these 1,2-phosphaborinines are confirmed by the synthesis of their π complexes with the Group 6 metals.
KW  - inorganic chemistry
KW  - phosphorus
KW  - boron
KW  - decarbonylation
KW  - heterocycles
KW  - ketenes
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-256470
VL  - 60
IS  - 24
ER  - 
TY  - JOUR
A1  - Lu, Wei
A1  - Jayaraman, Arumugam
A1  - Fantuzzi, Felipe
A1  - Dewhurst, Rian D.
A1  - Härterich, Marcel
A1  - Dietz, Maximilian
A1  - Hagspiel, Stephan
A1  - Krummenbacher, Ivo
A1  - Hammond, Kai
A1  - Cui, Jingjing
A1  - Braunschweig, Holger
T1  - An unsymmetrical, cyclic diborene based on a chelating CAAC ligand and its small-molecule activation and rearrangement chemistry
JF  - Angewandte Chemie International Edition
N2  - A one-pot synthesis of a CAAC-stabilized, unsymmetrical, cyclic diborene was achieved via consecutive two-electron reduction steps from an adduct of CAAC and B\(_2\)Br\(_4\)(SMe\(_2\))\(_2\). Theoretical studies revealed that this diborene has a considerably smaller HOMO–LUMO gap than those of reported NHC- and phosphine-supported diborenes. Complexation of the diborene with [AuCl(PCy\(_3\))] afforded two diborene–Au\(^I\) π complexes, while reaction with DurBH\(_2\), P\(_4\) and a terminal acetylene led to the cleavage of B−H, P−P, and C−C π bonds, respectively. Thermal rearrangement of the diborene gave an electron-rich cyclic alkylideneborane, which readily coordinated to Ag\(^I\) via its B=C double bond.
KW  - inorganic chemistry
KW  - thermal rearrangement
KW  - alkylideneborane
KW  - carbene
KW  - diborene
Y1  - 2022
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-256576
VL  - 61
IS  - 3
ER  -