CanPlace tag doesn't work
Solution 1:
CanPlace is not a data tag that exists, nor is it a boolean. You are probably looking for the CanPlaceOn tag, which does exist, but is still not a boolean.
Here's a helpful wiki page on data tags: http://minecraft.gamepedia.com/Player.dat_format
CanPlaceOn is a list of strings, each string containing the name of a block that it can be placed on. For example, to get a quartz block that can be placed on stone and dirt:
/replaceitem entity @p slot.hotbar.0 quartz_block 1 0 {CanPlaceOn:["minecraft:stone","minecraft:dirt"]}