No abstract

Inclusion crystals containing several halocarbons were formed by three types of diimide-based macrocycles. Iodomethane was encapsulated within the cavity of the macrocycle through halogen-related interactions.

Aus Phenol erhält man mit dem Dibromid (II) das Dihydrobenzofuran (III), das zum Keton (IV) acetyliert wird.

Significance: Reported is an efficient method to synthesize octacarboxy spherosilicate, OCPDS. It was converted from ODMPS by bromination and then hydrolysis in the presence of AgNO 3 and formic acid. The structure of ODMPS and OCPDS were both confirmed by FT-IR, 1 H NMR, 13 C NMR, 29 Si NMR, ESI-MS, and elemental analysis.

A Synthetic Approach to Benanomicin A: Synthesis of the Substituted 5,6-Dihydrobenzo[a]naphthacenequinone.-Trisubstituted α-tetralone (II), obtained by using Barton's method, is applied to the general synthesis of the title compounds such as (IX). This structure unit is a part of the anti-HIV-compound benanomicin A. -(HIROSAWA, S.; NISHIZUKA, T.; KONDO, S.; IKEDA, D.; Chem. Lett. (1997) 4, 305-306; Inst. Microb.