Table 2. Yield of Heterocycle-Forming MCR with Different Isocyanides.

entry	R1	yield [%]
1	cyclohexyl	70
2	4-OMe-Ph	100
3	4-F-Ph	28
4	naphth-2-yl	59
5	tBu	90
6	1-adamantyl	61
7	2,6-diMe-Ph	0