104172-64-7

Basic information

• Product Name: Piperidine, 1-[chloro(diphenylmethyl)boryl]-2,2,6,6-tetramethyl-
• CAS NO: 104172-64-7
• Molecular Formula: C22H29BClN
• Molecular Weight: 353.743
• Mol File: 104172-64-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Piperidine, 1-[chloro(diphenylmethyl)boryl]-2,2,6,6-tetramethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Piperidine, 1-[chloro(diphenylmethyl)boryl]-2,2,6,6-tetramethyl-(104172-64-7)
• EPA Substance Registry System: Piperidine, 1-[chloro(diphenylmethyl)boryl]-2,2,6,6-tetramethyl-(104172-64-7)

Safety Data

• Hazardous Substances Data: 104172-64-7(Hazardous Substances Data)

Upstream product

• 101-81-5 Diphenylmethane 
• 79855-29-1 dichloro-(2,2,6,6,-tetramethylpiperidino)borane 

Downstream Products

• 105309-73-7 (diphenylmethyl)(2,2,6,6-tetramethylpiperidino)borane 
• 768-66-1 2,2,6,6-tetramethyl-piperidine 
• 105309-74-8 benzyl(diphenylmethyl)(2,2,6,6-tetramethylpiperidino)borane 

Relevant articles and documents

Contributions to the Chemistry of Boron, 179. - Synthesis, Conformation, and Molecular Structure of Sterically Crowded Aminomethyleneborane Precursors

Nucleophilic substitution of one halogen atom in (tetramethylpiperidino)boron dihalides, tmpBX2 (X = F, Cl, Br) by metal organyls is determined primarily by steric factors.Replacement of one F-atom by an isopropyl or a (trimethylsilyl)methyl group to yield boranes of type tmpB(F)R present no problem.However, Cl or Br atoms cannot be substituted.Similarly, LiCHPh2 reacts with tmpBX2 to produce tmpB(X)CHPh2, but LiC(SiMe3)Ph2 can substitute only one fluorine atom in tmpBF2, while the p-substituted borane 3 is obtained by using tmpBCl2.Comparable results were achieved with 9-lithiofluorene yielding the boranes 4a-c.In contrast, 9-lithio-9-(trimethylsilyl)fluorene reacts only with tmpBF2 to produce 4f.NMR data of 4a suggest an anti orientation of the F-atom and the 9H-atom of the fluorene unit, ascertained by its X-ray molecular structure.In contrast, the trimethylsilyl derivative 4f adopts a syn geometry.