entity_encoding

This option controls how entities/characters get processed by TinyMCE. The value can be set as shown in Encoding Types below.

Encoding Types

Name	Summary
named	Characters will be converted into named entities based on the entities option. For example, a non-breaking space could be encoded as  .
numeric	Characters will be converted into numeric entities. For example, a non-breaking space would be encoded as  .
raw	All characters will be stored in non-entity form except these XML default entities: & < > "

tinymce.init({
        ...
        entity_encoding : "raw"
});