Predict the major substitution and elimination products for butane with a Ph atom and a I atom on the 2nd carbon when added with methanol and heat.

iupac name of the structure if it had carbon atoms I think is 2 dimethyl butane

To predict the major substitution and elimination products for the reaction of butane with a phosphate group (Ph) and an iodine atom (I) on the second carbon when added with methanol and heat, we need to consider the reactions that can occur.

First, let's clarify the structure of the molecule in question. Based on your description, the molecule is a 2,2-dimethylbutane, which has the following structure:

CH3 - C(CH3)2 - CH2 - CH3

Now, let's consider the reaction with methanol (CH3OH) and heat. With methanol acting as a nucleophile, the reaction can proceed through substitution or elimination pathways.

1. Substitution Reaction (SN2):
In this reaction, the Ph and I atoms can be replaced by the methoxy group (CH3O-).

The mechanism involves the nucleophilic attack of the oxygen atom of methanol on the second carbon atom of the 2,2-dimethylbutane, resulting in the substitution of the Ph and I.

The major substitution product would be:
CH3 - C(CH3)2 - CH2 - OCH3 (2,2-dimethylbutyl methoxy)

2. Elimination Reaction (E2):
In this reaction, the presence of heat facilitates the elimination of a hydrogen (H) and a leaving group (Ph or I) from the second carbon. This results in the formation of a double bond.

The major elimination product would be:
CH3 - C(CH3)=CH2 (2,2-dimethylbut-2-ene)

It's important to note that the outcome of the reaction would depend on the reaction conditions, reactant concentrations, and steric effects. Experimental analysis would be required to determine the actual major product.

Regarding the IUPAC name of the 2,2-dimethylbutane structure you described, it would be:
2,2-dimethylbutane