Hexacyclo[4.4.0.02,4.03,9.05,7.08,10]decane, a Bridged cis-Trishomobenzene

✍ Scribed by Dr. Armin de Meijere; Dieter Kaufmann; Otto Schallner

• Publisher: John Wiley and Sons
• Year: 1971
• Tongue: English
• Weight: 233 KB
• Volume: 10
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.197104171

✦ Synopsis

The two hydrogen atoms of ( I ) that are bonded to phosphorus react no further with BH; because of their low acidity. Stepwise removal of both these protons is, however, possible by reaction of ( I ) with n-butyllithium ; trisboranephosphite (2) and tetgakisboranephosphate (3), which are isoelectronic with, respectively, phosphite and phosphate, are then formed by subsequent addition of diborane :

[P(BH,),]Li,:

Preparation and working up were as for [HP(BH,),]Li,, but [HP(BH,),]Li, was used as starting material. The yield was 37%. All the reactions were carried out with exclusion of oxygen.