Mitsubishi has an app covering the intermediates for their GSK3 Sanofi-Aventis stuff. I still think the spiro compounds are sexier, but the morpholines are further explored so here we have a pretty solid looking asymmetric method to make 2-aryl morpholines via CBS reduction:
CCl)C=C1](http://img370.imageshack.us/img370/7310/untitled2kq6.jpg)
CNCC2=CC=CC=C2)C=C1 FC1=CC=C([C@H](OC2)CN(CC3=CC=CC=C3)C2=O)C=C1](http://img252.imageshack.us/img252/4789/mypicture5ii5.gif)
![FC1=CC=C([C@H]2CN(CC3=CC=CC=C3)CCO2)C=C1 FC1=CC=C([C@H]2CNCCO2)C=C1](http://img167.imageshack.us/img167/8666/mypicture6vl3.gif)
Route starts on page 79 example 1, 2 & 5 shown here.
Array might have something to say with how novel the approach is, y’know given how they sell the (rac) stuff?

C4=CC=CC=C4)C5(CCN(C)CC5)CCN31](http://img296.imageshack.us/img296/6892/sa1ii9.jpg)