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Journal of the American Chemical Society
Swarnarkar, A. K.; Hering-Junghans, C.; Ferguson, M. J.; Mcdonald,
1906845-1906849). The Supporting Information is
available free of charge on the ACS Publications website.
R.; Rivard, E. Oxoborane (RBO) complexation and concomitant
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AUTHOR INFORMATION
(7) For transition metal oxoboranes: (a) Braunschweig, H.;
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Branchadell, V.; Kato, T. Cyclic (amino)(phosphonium bora‐
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none. Angew. Chem., Int. Ed. 2017, 56, 15916-15920. (e) Wünsche,
M. A.; Witteler, T.; Dielmann, F. Lewis base free oxophosphonium
ions: tunable, trigonal‐planar Lewis acids. Angew. Chem., Int. Ed.
2018, 57, 7234-7239.
(9) Loh, Y. K.; Ying, L.; Fuentes, M. A.; Do, D. C. H.; Aldridge, S. An
N‐heterocyclic boryloxy ligand isoelectronic with N‐heterocyclic
imines: access to an acyclic dioxysilylene and its heavier conge-
ners. Angew. Chem., Int. Ed. 2019, 58, 4847-4851.
(10) Segawa, Y.; Suzuki, Y.; Yamashita, M.; Nozaki, N. Chemistry
of boryllithium: synthesis, structure and reactivity. J. Am. Chem.
Soc. 2008, 130, 16069-16079.
(11) For monomeric thioxoboranes: (a) Wang. H.; Zhang, J.; Hu,
H.; Cui, C. Access to B═S and B═Se double bonds via sulfur and
selenium insertion into a B−H bond and hydrogen migration. J.
Am. Chem. Soc. 2010, 132, 10998-10999. (b) Jaiswal, K.;
Prashanth, B.; Ravi, S.; Shasundar, K. R.; Singh, S. Reactivity of a
dihydroboron species: synthesis of a hydroborenium complex and
an expedient entry into stable thioxo- and selenoxo-boranes. Dal-
ton Trans. 2015, 44, 15779-15785. (c) Liu, S.; Legare, M.; Hof-
mann, A.; Braunschweig, H. A boradiselenirane and a boraditellu-
rirane: isolable heavy analogs of dioxiranes and dithiiranes. J. Am.
Chem. Soc. 2018, 140, 11223-11226. (d) Franz, D.; Irran, E.; Inoue,
S. Isolation of a three‐coordinate boron cation with a boron–
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(12) Baraznenok, I. L.; Nenajdenko, V. G.; Balenkova, E. S. Chem-
ical transformations induced by triflic anhydride. Tetrahedron
2000, 56, 3077-3119.
Corresponding Author
Prof Simon Aldridge, simon.aldridge@chem.ox.ac.uk.
Funding Sources
A*STAR (scholarship for YKL), the Jardine-Oxford
Scholarship (DDCH) and EPSRC (MAF, EP/K014714/1).
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