Sforno on Deuteronomy 21:16/ספורנו על דברים כ״א:ט״ז

1לא יוכל לבכר את בן האהובה על פני בן השנואה הבכור. The firstborn son’s entitlement to an extra share in his father’s inheritance must not be transferred on account of his father loving his mother more or “hating” her, i.e. loving her less than his second wife. If the reason the father wants to transfer the extra portion of the inheritance away from the chronologically entitled son due to that son’s misconduct¸ this is in order, as we know from Baba Batra 133 אם לא היה נוהג כשורה זכור לטוב, íf the chronologically oldest did not conduct himself properly his inheritance may be transferred to another better one. [opinion of Rabbi Shimon ben Gamliel only, not accepted by codifiers. Ed.] It appears that this is what Yaakov did when he took birthright privileges away from Reuven (Chronicles I 5,1) transferring it to Joseph.