New 1,3-Disubstituted Enantiomerically Pure Allylboronic Esters by Johnson Rearrangement of Boron-Substituted Allyl Alcohols.

New 1,3-Disubstituted Enantiomerically P

New 1,3-Disubstituted Enantiomerically Pure Allylboronic Esters by Johnson Rearrangement of Boron-Substituted Allyl Alcohols

✍ Jörg Pietruszka; Niklas Schöne 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 209 KB

## Abstract Starting from commercially available 1‐substituted propargylic alcohols **6**, **18** and __ent__**‐18**, stable enantio‐ and diastereomerically pure 1,3‐disubstituted allylboronic esters **10**, **19** and **20** were synthesized. The key step − a Johnson rearrangement − was highly dia