The present invention provides processes for the synthesis of five and six membered rings. The cable clamp has an upper housing and a lower housing joined to the upper housing. The tin cladding forms a noncontinuous layer over the outer surface of the substrate such that there are interspersed regions of lead and tin at the current collector surface. A lighting device has a substrate, a lighting source located on the substrate, and the optical lens located with the substrate and enclosing the lighting device. The shell receives the head of the probe and the needle clip.