Authenticating ember js using Azure AD and torii

I'm using torii to authenticate my front end using Azure AD and it's working fine. Now, my frontend needs to request a new token to access a backend that is also protected using Azure AD. I have a POC using Angular and Adal, and it fires the following request that I can't reproduce using Torii:

https://login.microsoftonline.com/myazuread.onmicrosoft.com/oauth2/authorize?response_type=token&client_id=6c49f322-11b4-42df-b064-96b9213c5754&resource=https%3A%2F%2Fmyazuread.onmicrosoft.com%2Fa6a6f6f0-7969-49e9-ad7e-cdf5299f8f59&redirect_uri=http%3A%2F%2Flocalhost%3A44342%2F&state=9db112a9-d644-4380-ba7d-c9e93bb2c756%7Chttps%3A%2F%2Fmyazuread.onmicrosoft.com%2Fa6a6f6f0-7969-49e9-ad7e-cdf5299f8f59&client-request-id=c83e62c3-bd86-4193-ac97-eefa8600916a&x-client-SKU=Js&x-client-Ver=1.0.12&prompt=none&login_hint=test%40myazuread.onmicrosoft.com&domain_hint=myazuread.onmicrosoft.com

PS: I just need the https://login.microsoftonline.com/myazuread.onmicrosoft.com/oauth2/authorize? the query parameters I can get them from Azure Portal.

Any help? Thanks in advance