Scheme 2 lists a series of 2-methyl-N-heteroaromatics that were tested in this reaction. What is the main difference between the groups of molecules 3a-3d and 3e-3h? Why is it significant that the reaction works about the same with both of these groups of molecules?

thats how its supposed to be

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

hope i !