i always get confused between gauche staggered and eclipsed. does anyone know a good way of differentiating between the two? also while we are on the subject of organic chemistry, did anyone else learn about gentle h? basically if you convert a carboxylic acid to R-COCl and then use gentle h, it reduces it to an aldehyde. kinda like pcc but its for reducing and it takes an extra step. i havent encountered it in any actual DAT material so im scared if a question comes up about reducing a carb acid to an aldehyde we should assume we cant. im just curious because there always trying to trick us about wether or not we can reduce a carb acid to an aldehyde with pcc (which we obviously cant), but if it just says reduce a carb acid to an aldehyde i know we can, its just not common. has anyone else done rxns with gentle h (i think the h stands for heat but im not sure)?