Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... There might be a brief outage due to maintenance of ScienceDirect on December 20 between 12:00 am EST ( 5:00 am GMT) and 12:00 pm EST (5:00 pm GMT) - it is not expected to last more than 10 minutes. ... The reaction of dimethyl ketals with (CO) 5 MnSi(CH 3 ) 3 ( at 50 °C in ...