| abstract |
The present invention provides a method for preparing a compound of formula (I), the method comprising contacting a compound of formula (II) with an effective amount of a compound of formula (III) or (IV). The present invention also provides a method for preparing a compound of formula (VI), the method comprising contacting a compound of formula (II) with an effective amount of one or more of 2,2-dimethylsuccinic acid, 2,2 dimethylbutanedioyl dichloride, 2,2-dimethylbutanedioyl dibromide, and 2,2 dimethylsuccinic anhydride. The present invention also provides a compound obtained from the method of the present invention. |