50612-53-8

Upstream product

• 97-94-9 triethyl borane 
• 210878-92-5 tetrakis(N-tert-butylsulfurdiimido)tin 
• 503027-51-8 tert-butyl selenium(IV) diimide 
• 184864-53-7 (CH₃)3CNHSN(C(CH₃)3)B(C₂H₅)2 
• 75-64-9 tert-butylamine 
• 2056-74-8 bis(tert-butyl)sulfur diimide 

Relevant academic research and scientific papers

Tetrakis(sulfurdiimido)silane, -germane and -stannane

Two tetrakis(sulfurdiimido)silanes [Si(NSNR)4 (R = tBu 1a, SiMe3 1b)], two germanes [Ge(NSNR)4 (R = tBu 2a, SiMe3 2b)] and one stannane [Sn(NSNtBu)4Sn 3a] were prepared and chara

Ethyloboration of selenium dioxide and selenium bis(terr-butylimide) molecular structure of an orgaeo-substituted eight-membered t-boseo-2 heterocycle111

Both selenium dioxide (1) and selenium bis(feri-butylimide) (2) react with triethylborane (A) by 1, 2-ethyloboration. In the case of 1, ethane, ethene., diethylselane (4a), tetraethyldiboroxane (Et2B)2O (B), triethylboroxine (EtBO)3 (D) and a cyclic compound [-Et2BOSe(Et)O-]2 (52) are formed after heating to 65 °C. Compound 52 is also formed when 1 reacts with B. Treatment of selenous acid (3) with A or, preferentially for synthetic purposes, with B provides further routes to 52. The reaction of the diimide 2 with A starts already below -50°C: a cyclic ethaneselenic acid derivative 6, Et2EN(tBu)-Se(Et)N(Bu, is formed, and 6 starts to decompose at -50°C by elimination of ethene to give finally (feri-butylamino)diethylborane (8), bis(diethylboryl)-terf-butylamine (9), and Et2Se (4a). Transborylation of 52 with (9-BBN)2O (C) affords [-(9-BBN)OSe(Et)O-]2 (102), which crystallizes in the monoclinic space group P21/n with the lattice constants (118 K) a= 667.1(1), b= 1282.5(1), c= 1289.1(1) pm and = 93.06(1). All reactions were monitored by 11B- and 77SeNMR spectroscopy. Furthermore, the reactions of 1 with A and B and the transborylations were studied by 17O-NMR spectroscopy using the 17O-enriched compounds 1(17O), B(17O), C(17O), andD(17O). VCH Verlagsgesellschaft mbH, , 1996.

Reaction of sulfur diimides with organoboranes - Studied by multinuclear magnetic resonance in solution

Reactions between sulfur diimides R(NSN)R′ (R = R′ = tBu (1a), SiMe3 (1b), SnMe3 (1c); R = tBu, R′ = SnMe3 (1d); R = SiMe3, R′ = SnMe3 (1e)) and various organoboranes were studied, and the products were characterised by multinuclear magnetic resonance data (1H, 11B, 13C, 15N, 29Si and 119Sn NMR). Tetraalkyldiboranes(6) (Et2BH2BEt2 (2), dimeric 9-borabicyclo[3.3.1]nonane (3)) react with 1a and 1b by 1,3-hydroboration to give the N-sulfanyl-dialkylaminoboranes 4 and 5 which are instable with respect to elimination of short-lived [R-NS]. Trialkylboranes (Et3B (8)) react only sluggishly with 1a, but more readily with 1b mainly via S-ethylation, formally a 1,2-ethyloboration, to give the diethylborylamido-imino-ethanesulfinic acid 9b. Compound 9b decomposes slowly at room temperature via ethene elimination to give 4b, followed by further decomposition via [R-NS] elimination. The compounds 9 can be prepared independently from the reaction between the N-lithio-imino-ethanesulfinic acid amide 10 and diorganoboron halides. The molecular structure of the lithium amide 10a (R = R′ = tBu) was determined by X-ray analysis as a dimer in which the four nitrogen, two sulfur and two lithium atoms adopt a boat conformation, in contrast with other known derivatives of this type. If the sulfur diimides bear at least one trimethylstannyl group (1c-e), their reactions with Et3B (8), iPr3B (12) or 9-iso-butyl-9-borabicyclo[3.3.1]nonane (13) lead to the novel aminoboranes 14-16. These are products of a 1,1-organoboration, since the Me3Sn group moves from one nitrogen atom to the other, and both the boryl and an alkyl group end up at the same nitrogen atom.