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Synthesis of ortho-substituted benzophenones by way of benzophenones carrying A t-butyl group as a blocking group

✍ Scribed by P. S. Hofman; D. J. Reiding; W. Th. Nauta

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
186 KB
Volume
79
Category
Article
ISSN
0165-0513

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✦ Synopsis

Abstract

Whereas benzoylation of toluene or m‐xylene is known to lead to a mixture of 2‐ and 4‐methylbenzophenone and to 2,4‐dimethylbenzophenone respectively, the presence of a blocking t.butyl group in the 4‐ and the 5‐positions respectively leads to products which on debutylation yield benzophenones with substituents in the ortho position only.

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A convenient synthesis of N-t-butyl-N′-a
A convenient synthesis of N-t-butyl-N′-aminocarbonyl-N-(substituted)benzoyl-hydrazine containing α-aminoalkylphosphonate groups in a one-pot procedure
✍ Qingmin Wang; Zaiguo Li; Runqiu Huang; Junran Cheng 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 87 KB

## Abstract A variety of novel N‐t‐butyl‐N′‐aminocarbonyl‐N‐(substituted)benzoylhydrazines containing α‐aminoalkylphosphonate groups were synthesized. Treatment of α‐aminoalkylphosphonates with triphosgene yielded α‐isocyanatoalkylphosphonates, and subsequent addition with N‐t‐butyl‐N‐substituted b