✦ LIBER ✦

1-Amino- and 1,3-Diaminoimidazolium Salts

✍ Scribed by Dr. Helmut Link; Prof. Dr. Wilhelm Klötzer; Dr. Eva Maria Karpitschka; Dr. Marc Montavon; Dr. Renate Müssner; Dr. Nicolas Singewald

Publisher: John Wiley and Sons
Year: 1990
Tongue: English
Weight: 251 KB
Volume: 29
Category: Article
ISSN: 0044-8249
DOI: 10.1002/anie.199005561

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✦ Synopsis

The configuration of the alkylation products (e.g., 6 and 7) are fully in accord with this analysis.

In summary, chiral auxiliary compounds (3) of a new shape have been described, and their action can be related to the stereoelectronics of enolate alkylations. The asymmetric environment of the auxiliary compounds is so well defined in structures such as 3b that such materials show efficiency as asymmetric protonation agents.

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